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This issue was originally marked as duplicate of issue 161928, that is already resolved. This issue is still valid, so this seems to be another issue, but it might be related. Build: NetBeans IDE 6.7 (Build 200906241340) VM: Java HotSpot(TM) Client VM, 1.6.0_03-b05, Java(TM) SE Runtime Environment, 1.6.0_03-b05 OS: Windows XP, 5.1, x86 User Comments: jhalupka: Undo operation Stacktrace: java.lang.ArrayIndexOutOfBoundsException: 368 at org.netbeans.editor.MarkVector.update(MarkVector.java:336) at org.netbeans.editor.DocumentContent$Edit.undoOrRedo(DocumentContent.java:443) at org.netbeans.editor.DocumentContent$Edit.redo(DocumentContent.java:425) at org.netbeans.editor.BaseDocumentEvent.redo(BaseDocumentEvent.java:367) at org.netbeans.editor.GuardedDocumentEvent.redo(GuardedDocumentEvent.java:78) at javax.swing.undo.CompoundEdit.redo(CompoundEdit.java:59)
Created attachment 87934 [details] stacktrace
Were you editing a java file or any other kind of document? Any specific conditions that could help us to reproduce the problem?