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Build: NetBeans IDE 8.2 (Build 201705191307) VM: Java HotSpot(TM) 64-Bit Server VM, 25.121-b13, Java(TM) SE Runtime Environment, 1.8.0_121-b13 OS: Windows 10 User Comments: michaelcrc51: I opend one of my node.js projects and clicked on the libraries folder when this error was generated. Also, an hourglass appearde directly under the libraries folder with the caption "Please wait". Stacktrace: java.lang.IllegalArgumentException: Comparison method violates its general contract! at java.util.ComparableTimSort.mergeLo(ComparableTimSort.java:744) at java.util.ComparableTimSort.mergeAt(ComparableTimSort.java:481) at java.util.ComparableTimSort.mergeForceCollapse(ComparableTimSort.java:422) at java.util.ComparableTimSort.sort(ComparableTimSort.java:222) at java.util.Arrays.sort(Arrays.java:1312) at java.util.Arrays.sort(Arrays.java:1506)
Created attachment 164542 [details] stacktrace