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This bug was originally marked as duplicate of bug 222286, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 7.3 (Build 201302132200) VM: Java HotSpot(TM) 64-Bit Server VM, 23.7-b01, Java(TM) SE Runtime Environment, 1.7.0_13-b20 OS: Windows 8 User Comments: GUEST: . Stacktrace: java.lang.IllegalArgumentException: Comparison method violates its general contract! at java.util.ComparableTimSort.mergeLo(ComparableTimSort.java:714) at java.util.ComparableTimSort.mergeAt(ComparableTimSort.java:451) at java.util.ComparableTimSort.mergeCollapse(ComparableTimSort.java:376) at java.util.ComparableTimSort.sort(ComparableTimSort.java:182) at java.util.ComparableTimSort.sort(ComparableTimSort.java:146) at java.util.Arrays.sort(Arrays.java:472)
Created attachment 135293 [details] stacktrace
*** This bug has been marked as a duplicate of bug 226100 ***