java.lang.ExceptionInInitializerError
at org.jruby.RubyIO.<clinit>(RubyIO.java:113)
at org.jruby.RubyInstanceConfig.setupEnvironment(RubyInstanceConfig.java:677)
at org.jruby.RubyInstanceConfig.<init>(RubyInstanceConfig.java:123)
at org.jruby.embed.internal.AbstractLocalContextProvider.<init>(AbstractLocalContextProvider.java:59)
at org.jruby.embed.internal.SingleThreadLocalContextProvider.<init>(SingleThreadLocalContextProvider.java:50)
at org.jruby.embed.ScriptingContainer.getProviderInstance(ScriptingContainer.java:260)
at org.jruby.embed.ScriptingContainer.<init>(ScriptingContainer.java:241)
at org.jruby.embed.ScriptingContainer.<init>(ScriptingContainer.java:227)
at org.typeexit.kettle.plugin.steps.ruby.RubyStepFactory.createScriptingContainer(RubyStepFactory.java:18)
at org.typeexit.kettle.plugin.steps.ruby.RubyStepParseErrorHelper.<init>(RubyStepParseErrorHelper.java:34)
at org.typeexit.kettle.plugin.steps.ruby.RubyStepDialog.open(RubyStepDialog.java:234)
at org.pentaho.di.ui.spoon.delegates.SpoonStepsDelegate.editStep(SpoonStepsDelegate.java:124)
at org.pentaho.di.ui.spoon.Spoon.editStep(Spoon.java:8712)
at org.pentaho.di.ui.spoon.trans.TransGraph.editStep(TransGraph.java:3061)
at org.pentaho.di.ui.spoon.trans.TransGraph.mouseDoubleClick(TransGraph.java:747)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at org.pentaho.di.ui.spoon.Spoon.readAndDispatch(Spoon.java:1319)
at org.pentaho.di.ui.spoon.Spoon.waitForDispose(Spoon.java:7939)
at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:9190)
at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:654)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.pentaho.commons.launcher.Launcher.main(Launcher.java:92)
Caused by: java.lang.SecurityException: Prohibited package name: java.util.concurrent
at java.lang.ClassLoader.preDefineClass(ClassLoader.java:658)
at java.lang.ClassLoader.defineClass(ClassLoader.java:794)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at org.pentaho.di.core.plugins.KettleURLClassLoader.loadClassFromThisLoader(KettleURLClassLoader.java:76)
at org.pentaho.di.core.plugins.KettleURLClassLoader.loadClass(KettleURLClassLoader.java:99)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at org.jruby.util.ByteList.<clinit>(ByteList.java:1222)
... 29 more
with branch https://github.com/akretion/terminatooor/tree/jruby-9k getting this classloader error opening the Ruby step dialog box: