java.lang.IllegalArgumentException: Comparison method violates its general contract!
   at java.util.TimSort.mergeHi(TimSort.java:868)
   at java.util.TimSort.mergeAt(TimSort.java:485)
   at java.util.TimSort.mergeForceCollapse(TimSort.java:426)
   at java.util.TimSort.sort(TimSort.java:223)
   at java.util.TimSort.sort(TimSort.java:173)
   at java.util.Arrays.sort(Arrays.java:659)
   at java.util.Collections.sort(Collections.java:217)
   at org.netbeans.modules.web.clientproject.api.jslibs.JavaScriptLibrarySelectionPanel$LibrariesTableModel$1.run(JavaScriptLibrarySelectionPanel.java:1270)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)