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This bug was originally marked as duplicate of bug 180960, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 6.9.1 (Build 201007282301) VM: Java HotSpot(TM) 64-Bit Server VM, 17.0-b16, Java(TM) SE Runtime Environment, 1.6.0_21-b06 OS: Windows 7 User Comments: lazarius: Tried to open diff window from within the Subversion window. Stacktrace: java.lang.IndexOutOfBoundsException: Index: 3, Size: 3 at java.util.ArrayList.RangeCheck(ArrayList.java:547) at java.util.ArrayList.get(ArrayList.java:322) at org.netbeans.swing.tabcontrol.DefaultTabDataModel.fireIndicesChanged(DefaultTabDataModel.java:493) at org.netbeans.swing.tabcontrol.DefaultTabDataModel.setTabs(DefaultTabDataModel.java:123) at org.netbeans.core.windows.view.ui.tabcontrol.TabbedAdapter.setTopComponents(TabbedAdapter.java:237) at org.netbeans.core.windows.view.ui.TabbedHandler.setTopComponents(TabbedHandler.java:157)
Created attachment 101834 [details] stacktrace
*** This bug has been marked as a duplicate of bug 180960 ***