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Assuming you are designing some jFrame. 1) Add a new component and save it. 2) Invoke CVS | Diff... from the <form>.java context menu. 3) Try to remove new lines in local copy using the red cross -> following exception is thrown: org.netbeans.editor.GuardedException: Attempt to remove from guarded block at position 776. at org.netbeans.editor.GuardedDocument.preRemoveCheck(GuardedDocument.java:192) at org.netbeans.editor.BaseDocument.remove(BaseDocument.java:741) at org.netbeans.modules.diff.builtin.visualizer.editable.EditableDiffView.rollback(EditableDiffView.java:366) ... ----- NetBeans IDE Dev (Build 200703211900) 1.6.0; Java HotSpot(TM) Client VM 1.6.0-b105 Windows Vista version 6.0 running on x86 en_GB (nb); Cp1252
Created attachment 39812 [details] Exception Stacktrace
*** This issue has been marked as a duplicate of 99098 ***
Well, verified duplicate. Except for the fact I filed it 5 days earlier :)