GAMA Git on MacOS has many graphical glitches with JAVA 1.8.0 u261

[benoitgaudou]

Describe the bug When I download the last update of Java Oracle (Java 1.8.0 u261-b12) on my MacOS Catalina, I was not able to launch GAMA Git...

I have 2 java Oracle 1.8 installed on my computer: Java 1.8.0 202 and Java 1.8.0 261. In Eclipse when I chose as Execution environment, Java 1.8.0 202, GAMA runs perfectly. But when I use Java 1.8.0 261, a launch of GAMA displays the splash screen, but the windows to choose the workspace has some graphical glitches, and GAMA too. In addition, I have the following exception in the Eclipse Console:

> JAI/ImageIO subsystem activated
Adding object pool: Ordered Collectors
Adding object pool: Unique Collectors
Adding object pool: Unique Ordered Collectors
> GAMA: msi.gama.core                         loaded in : 1402ms
> GAMA: msi.gama.headless                     loaded in : 6ms
> GAMA: msi.gama.lang.gaml                    loaded in : 4ms
> GAMA: ummisco.gama.opengl                   loaded in : 6ms
> GAMA: ummisco.gaml.extensions.maths         loaded in : 13ms
> GAMA: ummisco.gama.serialize                loaded in : 6ms
> GAMA: msi.gaml.extensions.fipa              loaded in : 16ms
> GAMA: ummisco.gaml.extensions.stats         loaded in : 13ms
> GAMA: simtools.gaml.extensions.traffic      loaded in : 32ms
> GAMA: simtools.gaml.extensions.physics      loaded in : 8ms
> GAMA: ummisco.gama.network                  loaded in : 9ms
> GAMA: irit.gaml.extensions.database         loaded in : 17ms
> GAMA: msi.gaml.architecture.simplebdi       loaded in : 100ms
> GAMA: ummisco.gama.java2d                   loaded in : 1ms
> GAMA total load time : 1687ms
java.lang.NullPointerException
    at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:2179)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:262)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:223)
    at org.eclipse.swt.custom.CLabel.getTotalSize(CLabel.java:273)
    at org.eclipse.swt.custom.CLabel.onPaint(CLabel.java:431)
    at org.eclipse.swt.custom.CLabel.lambda$0(CLabel.java:121)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4363)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1512)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1535)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1520)
    at org.eclipse.swt.widgets.Control.drawWidget(Control.java:1278)
    at org.eclipse.swt.widgets.Canvas.drawWidget(Canvas.java:175)
    at org.eclipse.swt.widgets.Widget.drawRect(Widget.java:776)
    at org.eclipse.swt.widgets.Canvas.drawRect(Canvas.java:169)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:6005)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Display.applicationNextEventMatchingMask(Display.java:5254)
    at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5683)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
    at org.eclipse.swt.internal.cocoa.NSApplication.nextEventMatchingMask(NSApplication.java:97)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
    at org.eclipse.jface.window.Window.runEventLoop(Window.java:823)
    at org.eclipse.jface.window.Window.open(Window.java:799)
    at msi.gama.application.Application.checkWorkspace(Application.java:210)
    at msi.gama.application.Application.start(Application.java:113)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:661)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1476)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1449)

When GAMA has been launched, clicking on a element of the model library, throws many ex eption (and does not open it at the first click, but only after clicking a second time). (see exception at the end)

Screenshots

Desktop (please complete the following information):

• OS: macOS Catalina
• GAMA version: git
• Java version: Oracle 1.8, 202 & 261

Additional context On Ubuntu or Windows, such an issue does not appear.

Exception when clicking on an element of a model library tree element:

!ENTRY org.eclipse.jface 4 2 2020-08-25 12:46:12.730
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface".
!STACK 0
java.lang.NullPointerException
    at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:2179)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:262)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:223)
    at ummisco.gama.ui.controls.FlatButton.computeMinWidth(FlatButton.java:248)
    at ummisco.gama.ui.controls.FlatButton.computeSize(FlatButton.java:230)
    at ummisco.gama.ui.views.toolbar.GamaToolbar2.button(GamaToolbar2.java:199)
    at ummisco.gama.ui.views.toolbar.GamaToolbar2.status(GamaToolbar2.java:133)
    at ummisco.gama.ui.navigator.GamaNavigator.showStatus(GamaNavigator.java:319)
    at ummisco.gama.ui.navigator.GamaNavigator.selectionChanged(GamaNavigator.java:310)
    at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:874)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:176)
    at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:871)
    at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1240)
    at org.eclipse.ui.navigator.CommonViewer.handlePostSelect(CommonViewer.java:460)
    at org.eclipse.jface.viewers.StructuredViewer.lambda$0(StructuredViewer.java:1263)
    at org.eclipse.swt.events.SelectionListener$1.widgetSelected(SelectionListener.java:84)
    at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:265)
    at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:260)
    at org.eclipse.jface.util.OpenStrategy$1.lambda$1(OpenStrategy.java:430)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4102)
    at org.eclipse.swt.widgets.Display.observerProc(Display.java:3682)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Display.applicationNextEventMatchingMask(Display.java:5254)
    at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5683)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:235)
    at org.eclipse.swt.widgets.Widget.mouseDownSuper(Widget.java:1146)
    at org.eclipse.swt.widgets.Tree.mouseDownSuper(Tree.java:2148)
    at org.eclipse.swt.widgets.Widget.mouseDown(Widget.java:1138)
    at org.eclipse.swt.widgets.Control.mouseDown(Control.java:2621)
    at org.eclipse.swt.widgets.Tree.mouseDown(Tree.java:2115)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:6038)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:235)
    at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:2158)
    at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2413)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:6162)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:5396)
    at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5553)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
    at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:131)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:566)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at msi.gama.application.Application.start(Application.java:128)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:661)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1476)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1449)
java.lang.NullPointerException
    at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:2179)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:262)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:223)
    at ummisco.gama.ui.controls.FlatButton.computeMinWidth(FlatButton.java:248)
    at ummisco.gama.ui.controls.FlatButton.computeSize(FlatButton.java:230)
    at ummisco.gama.ui.views.toolbar.GamaToolbar2.button(GamaToolbar2.java:199)
    at ummisco.gama.ui.views.toolbar.GamaToolbar2.status(GamaToolbar2.java:133)
    at ummisco.gama.ui.navigator.GamaNavigator.showStatus(GamaNavigator.java:319)
    at ummisco.gama.ui.navigator.GamaNavigator.selectionChanged(GamaNavigator.java:310)
    at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:874)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:176)
    at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:871)
    at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1240)
    at org.eclipse.ui.navigator.CommonViewer.handlePostSelect(CommonViewer.java:460)
    at org.eclipse.jface.viewers.StructuredViewer.lambda$0(StructuredViewer.java:1263)
    at org.eclipse.swt.events.SelectionListener$1.widgetSelected(SelectionListener.java:84)
    at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:265)
    at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:260)
    at org.eclipse.jface.util.OpenStrategy$1.lambda$1(OpenStrategy.java:430)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4102)
    at org.eclipse.swt.widgets.Display.observerProc(Display.java:3682)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Display.applicationNextEventMatchingMask(Display.java:5254)
    at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5683)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:235)
    at org.eclipse.swt.widgets.Widget.mouseDownSuper(Widget.java:1146)
    at org.eclipse.swt.widgets.Tree.mouseDownSuper(Tree.java:2148)
    at org.eclipse.swt.widgets.Widget.mouseDown(Widget.java:1138)
    at org.eclipse.swt.widgets.Control.mouseDown(Control.java:2621)
    at org.eclipse.swt.widgets.Tree.mouseDown(Tree.java:2115)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:6038)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:235)
    at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:2158)
    at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2413)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:6162)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:5396)
    at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5553)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
    at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:131)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:566)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at msi.gama.application.Application.start(Application.java:128)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:661)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1476)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1449)
java.lang.NullPointerException
    at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:2179)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:262)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:223)
    at ummisco.gama.ui.controls.FlatButton.computeMinWidth(FlatButton.java:248)
    at ummisco.gama.ui.controls.FlatButton.computeSize(FlatButton.java:230)
    at ummisco.gama.ui.views.toolbar.GamaToolbar2.button(GamaToolbar2.java:199)
    at ummisco.gama.ui.views.toolbar.GamaToolbar2.status(GamaToolbar2.java:133)
    at ummisco.gama.ui.navigator.GamaNavigator.showStatus(GamaNavigator.java:319)
    at ummisco.gama.ui.navigator.GamaNavigator.selectionChanged(GamaNavigator.java:310)
    at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:874)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:176)
    at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:871)
    at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1240)
    at org.eclipse.ui.navigator.CommonViewer.handlePostSelect(CommonViewer.java:460)
    at org.eclipse.jface.viewers.StructuredViewer.lambda$0(StructuredViewer.java:1263)
    at org.eclipse.swt.events.SelectionListener$1.widgetSelected(SelectionListener.java:84)
    at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:265)
    at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:260)
    at org.eclipse.jface.util.OpenStrategy$1.lambda$1(OpenStrategy.java:430)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4102)
    at org.eclipse.swt.widgets.Display.observerProc(Display.java:3682)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Display.applicationNextEventMatchingMask(Display.java:5254)
    at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5683)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:235)
    at org.eclipse.swt.widgets.Widget.mouseDownSuper(Widget.java:1146)
    at org.eclipse.swt.widgets.Tree.mouseDownSuper(Tree.java:2148)
    at org.eclipse.swt.widgets.Widget.mouseDown(Widget.java:1138)
    at org.eclipse.swt.widgets.Control.mouseDown(Control.java:2621)
    at org.eclipse.swt.widgets.Tree.mouseDown(Tree.java:2115)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:6038)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:235)
    at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:2158)
    at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2413)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:6162)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:5396)
    at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5553)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
    at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:131)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:566)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at msi.gama.application.Application.start(Application.java:128)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:661)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1476)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1449)
java.lang.NullPointerException
    at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:2179)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:262)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:223)
    at org.eclipse.swt.custom.CLabel.getTotalSize(CLabel.java:273)
    at org.eclipse.swt.custom.CLabel.computeSize(CLabel.java:147)
    at org.eclipse.jface.action.StatusLine$StatusLineLayout.computeSize(StatusLine.java:156)
    at org.eclipse.swt.widgets.Composite.computeSize(Composite.java:229)
    at org.eclipse.swt.widgets.Control.computeSize(Control.java:902)
    at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout.computeSize(TrimBarLayout.java:179)
    at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout.access$0(TrimBarLayout.java:178)
    at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout$TrimLine.addControl(TrimBarLayout.java:52)
    at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout.computeSize(TrimBarLayout.java:141)
    at org.eclipse.swt.widgets.Composite.computeSize(Composite.java:229)
    at org.eclipse.e4.ui.workbench.renderers.swt.TrimmedPartLayout.layout(TrimmedPartLayout.java:134)
    at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1266)
    at org.eclipse.swt.widgets.Composite.setLayoutDeferred(Composite.java:1142)
    at org.eclipse.swt.widgets.Display.runDeferredLayouts(Display.java:4174)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3753)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:566)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at msi.gama.application.Application.start(Application.java:128)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:661)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1476)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1449)

!ENTRY org.eclipse.ui.navigator 4 2 2020-08-25 12:46:13.013
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.navigator".
!STACK 0
java.lang.NullPointerException
    at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:2179)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:262)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:223)
    at org.eclipse.swt.widgets.Tree.setScrollWidth(Tree.java:3155)
    at org.eclipse.swt.widgets.Tree.setScrollWidth(Tree.java:3148)
    at org.eclipse.swt.widgets.Tree.destroyItem(Tree.java:979)
    at org.eclipse.swt.widgets.TreeItem.destroyWidget(TreeItem.java:405)
    at org.eclipse.swt.widgets.Widget.release(Widget.java:1363)
    at org.eclipse.swt.widgets.TreeItem.release(TreeItem.java:1000)
    at org.eclipse.swt.widgets.Widget.dispose(Widget.java:694)
    at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:804)
    at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:604)
    at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:766)
    at org.eclipse.jface.viewers.AbstractTreeViewer.setExpandedState(AbstractTreeViewer.java:2514)
    at org.eclipse.ui.navigator.CommonNavigator.handleDoubleClick(CommonNavigator.java:560)
    at ummisco.gama.ui.navigator.GamaNavigator.handleDoubleClick(GamaNavigator.java:231)
    at org.eclipse.ui.navigator.CommonNavigator$4$1.run(CommonNavigator.java:533)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.navigator.CommonNavigator$4.doubleClick(CommonNavigator.java:530)
    at org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:833)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:176)
    at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:830)
    at org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSelect(AbstractTreeViewer.java:1518)
    at org.eclipse.ui.navigator.CommonViewer.handleDoubleSelect(CommonViewer.java:448)
    at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1260)
    at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:253)
    at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:251)
    at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:310)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4363)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1512)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1535)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1520)
    at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1324)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4150)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3767)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:566)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at msi.gama.application.Application.start(Application.java:128)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:661)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1476)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1449)
java.lang.NullPointerException
    at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:2179)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:262)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:223)
    at org.eclipse.swt.widgets.Tree.setScrollWidth(Tree.java:3155)
    at org.eclipse.swt.widgets.Tree.setScrollWidth(Tree.java:3148)
    at org.eclipse.swt.widgets.Tree.destroyItem(Tree.java:979)
    at org.eclipse.swt.widgets.TreeItem.destroyWidget(TreeItem.java:405)
    at org.eclipse.swt.widgets.Widget.release(Widget.java:1363)
    at org.eclipse.swt.widgets.TreeItem.release(TreeItem.java:1000)
    at org.eclipse.swt.widgets.Widget.dispose(Widget.java:694)
    at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:804)
    at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:604)
    at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:766)
    at org.eclipse.jface.viewers.AbstractTreeViewer.setExpandedState(AbstractTreeViewer.java:2514)
    at org.eclipse.ui.navigator.CommonNavigator.handleDoubleClick(CommonNavigator.java:560)
    at ummisco.gama.ui.navigator.GamaNavigator.handleDoubleClick(GamaNavigator.java:231)
    at org.eclipse.ui.navigator.CommonNavigator$4$1.run(CommonNavigator.java:533)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.navigator.CommonNavigator$4.doubleClick(CommonNavigator.java:530)
    at org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:833)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:176)
    at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:830)
    at org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSelect(AbstractTreeViewer.java:1518)
    at org.eclipse.ui.navigator.CommonViewer.handleDoubleSelect(CommonViewer.java:448)
    at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1260)
    at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:253)
    at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:251)
    at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:310)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4363)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1512)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1535)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1520)
    at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1324)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4150)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3767)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:566)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at msi.gama.application.Application.start(Application.java:128)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:661)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1476)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1449)
java.lang.NullPointerException
    at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:2179)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:262)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:223)
    at org.eclipse.swt.custom.CLabel.getTotalSize(CLabel.java:273)
    at org.eclipse.swt.custom.CLabel.computeSize(CLabel.java:147)
    at org.eclipse.jface.action.StatusLine$StatusLineLayout.computeSize(StatusLine.java:156)
    at org.eclipse.swt.widgets.Composite.computeSize(Composite.java:229)
    at org.eclipse.swt.widgets.Control.computeSize(Control.java:902)
    at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout.computeSize(TrimBarLayout.java:179)
    at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout.access$0(TrimBarLayout.java:178)
    at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout$TrimLine.addControl(TrimBarLayout.java:52)
    at org.eclipse.e4.ui.workbench.renderers.swt.TrimBarLayout.computeSize(TrimBarLayout.java:141)
    at org.eclipse.swt.widgets.Composite.computeSize(Composite.java:229)
    at org.eclipse.e4.ui.workbench.renderers.swt.TrimmedPartLayout.layout(TrimmedPartLayout.java:134)
    at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1266)
    at org.eclipse.swt.widgets.Composite.setLayoutDeferred(Composite.java:1142)
    at org.eclipse.swt.widgets.Display.runDeferredLayouts(Display.java:4174)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3753)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:566)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at msi.gama.application.Application.start(Application.java:128)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:661)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1476)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1449)

!ENTRY org.eclipse.ui.navigator 4 0 2020-08-25 12:46:13.116
!MESSAGE java.lang.NullPointerException
!STACK 0
java.lang.NullPointerException
    at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:2179)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:262)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:223)
    at org.eclipse.swt.widgets.Tree.setScrollWidth(Tree.java:3155)
    at org.eclipse.swt.widgets.Tree.setScrollWidth(Tree.java:3148)
    at org.eclipse.swt.widgets.Tree.destroyItem(Tree.java:979)
    at org.eclipse.swt.widgets.TreeItem.destroyWidget(TreeItem.java:405)
    at org.eclipse.swt.widgets.Widget.release(Widget.java:1363)
    at org.eclipse.swt.widgets.TreeItem.release(TreeItem.java:1000)
    at org.eclipse.swt.widgets.Widget.dispose(Widget.java:694)
    at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:804)
    at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:604)
    at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:766)
    at org.eclipse.jface.viewers.AbstractTreeViewer.setExpandedState(AbstractTreeViewer.java:2514)
    at org.eclipse.ui.navigator.CommonNavigator.handleDoubleClick(CommonNavigator.java:560)
    at ummisco.gama.ui.navigator.GamaNavigator.handleDoubleClick(GamaNavigator.java:231)
    at org.eclipse.ui.navigator.CommonNavigator$4$1.run(CommonNavigator.java:533)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.navigator.CommonNavigator$4.doubleClick(CommonNavigator.java:530)
    at org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:833)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:176)
    at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:830)
    at org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSelect(AbstractTreeViewer.java:1518)
    at org.eclipse.ui.navigator.CommonViewer.handleDoubleSelect(CommonViewer.java:448)
    at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1260)
    at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:253)
    at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:251)
    at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:310)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4363)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1512)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1535)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1520)
    at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1324)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4150)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3767)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:566)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at msi.gama.application.Application.start(Application.java:128)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:661)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1476)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1449)
java.lang.NullPointerException
    at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:2179)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:262)
    at org.eclipse.swt.graphics.GC.<init>(GC.java:223)
    at org.eclipse.swt.widgets.Tree.setScrollWidth(Tree.java:3155)
    at org.eclipse.swt.widgets.Tree.setScrollWidth(Tree.java:3148)
    at org.eclipse.swt.widgets.Tree.destroyItem(Tree.java:979)
    at org.eclipse.swt.widgets.TreeItem.destroyWidget(TreeItem.java:405)
    at org.eclipse.swt.widgets.Widget.release(Widget.java:1363)
    at org.eclipse.swt.widgets.TreeItem.release(TreeItem.java:1000)
    at org.eclipse.swt.widgets.Widget.dispose(Widget.java:694)
    at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:804)
    at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:604)
    at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:766)
    at org.eclipse.jface.viewers.AbstractTreeViewer.setExpandedState(AbstractTreeViewer.java:2514)
    at org.eclipse.ui.navigator.CommonNavigator.handleDoubleClick(CommonNavigator.java:560)
    at ummisco.gama.ui.navigator.GamaNavigator.handleDoubleClick(GamaNavigator.java:231)
    at org.eclipse.ui.navigator.CommonNavigator$4$1.run(CommonNavigator.java:533)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.navigator.CommonNavigator$4.doubleClick(CommonNavigator.java:530)
    at org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:833)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
    at org.eclipse.ui.internal.JFaceUtil.lambda$0(JFaceUtil.java:47)
    at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:176)
    at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:830)
    at org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSelect(AbstractTreeViewer.java:1518)
    at org.eclipse.ui.navigator.CommonViewer.handleDoubleSelect(CommonViewer.java:448)
    at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1260)
    at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:253)
    at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:251)
    at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:310)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
    at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4363)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1512)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1535)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1520)
    at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1324)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4150)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3767)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
    at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:566)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at msi.gama.application.Application.start(Application.java:128)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:661)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:597)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1476)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1449)

[jferdelyi]

Hello, same issue

Desktop

• OS: macOS Catalina (10.15.7)
• GAMA version: git
• Java version: Oracle 1.8 261

Bugfix

• Java version: Oracle 1.8 202

Note: if you have two versions of Java 1.8 installed in the folder "/Library/Java/JavaVirtualMachines" in my case Eclipse uses the latest (1.8 261 instead of 1.8 202).

[AlexisDrogoul]

Closing this one as the requirement is now JDK 11