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Open the sun-ejb-jar.xml graphical editor from 2 projects. Close the first one, then close the second one. There is an NPE on the second close. I'll attach a stack trace.
Created attachment 19504 [details] log file excerpt
Note that now I only see this in the log. Previously I (also?) saw a VisualizerNode error in the stack and pop up exception dialogs.
Spoke too soon - if you reopen one of the editors and try to expand the top level Sun EJB Jar node, you'll see the Visualizer exception and dialog.
Created attachment 19505 [details] Visualizer NPE
No more valid in recent builds. Not able to reproduce. Verified this in release41_beta branch build.