Eclipse hangs on startup if I have at least one go file open in the middle pane on Go perspective.

[sashaepstein]

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[sashaepstein]

Using latest GoClipse plugin and go tools, latest Neon, Eclipse hangs on startup if I have at least one go file open in the middle pane on Go perspective. .log has this message: Source menu com.googlecode.goclipse.ui.sourceMenu not created by plugin.xml! Maybe this is not relevant but when there is no open go files, Eclipse starts fine and everything works with Go, but I see the following exception in the log: java.io.IOException: Unable to resolve plug-in "platform:/plugin/com.googlecode.goclipse.ui/icons/views/SourceEditor.png", even though the png is present in the com.googlecode.goclipse.ui_0.16.1.v201607061938.jar