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This bug was originally marked as duplicate of bug 252618, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE Dev (Build 201509200002) VM: Java HotSpot(TM) 64-Bit Server VM, 25.20-b23, Java(TM) SE Runtime Environment, 1.8.0_20-b26 OS: Windows 8 User Comments: stefan79: Updated Files in CVS-Diff. Stacktrace: java.lang.IllegalArgumentException: java.lang.ClassCastException@5740a71e at sun.reflect.GeneratedMethodAccessor593.invoke(GeneratedMethodAccessor593.java:0) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.openide.util.WeakListenerImpl$ListenerReference.run(WeakListenerImpl.java:638) at org.openide.util.lookup.implspi.ActiveQueue$Daemon.run(ActiveQueue.java:192)
Created attachment 156384 [details] stacktrace
*** This bug has been marked as a duplicate of bug 205028 ***