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This bug was originally marked as duplicate of bug 170794, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 7.0 Beta (Build 201011152355) VM: Java HotSpot(TM) Client VM, 16.2-b04, Java(TM) SE Runtime Environment, 1.6.0_19-b04 OS: Windows XP User Comments: marcotts: while debugging a jme project Stacktrace: java.lang.AssertionError: removeNotify called twice or w/o addNotify() at org.netbeans.modules.mobility.project.ui.ProjectRootNodeChildren.removeNotify(ProjectRootNodeChildren.java:116) at org.openide.nodes.AsynchChildren.removeNotify(AsynchChildren.java:104) at org.openide.nodes.Children.callRemoveNotify(Children.java:573) at org.openide.nodes.EntrySupport$Default.finalizedChildrenArray(EntrySupport.java:910) at org.openide.nodes.EntrySupport$Default$ChArrRef.run(EntrySupport.java:994) at org.openide.util.lookup.implspi.ActiveQueue$Impl.run(ActiveQueue.java:109)
Created attachment 103377 [details] stacktrace
*** This bug has been marked as a duplicate of bug 192801 ***