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This bug was originally marked as duplicate of bug 212211, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 8.0.1 (Build 201408251540) VM: Java HotSpot(TM) 64-Bit Server VM, 25.11-b03, Java(TM) SE Runtime Environment, 1.8.0_11-b12 OS: Windows 8 User Comments: GUEST: Trying to open a project whose sources folder was moved. Getting message about configuring sources folder, but it never opens the project. The project never shows in the "Projects" sidebar Stacktrace: java.lang.NullPointerException at org.netbeans.modules.j2ee.common.dd.DDHelper$MakeFileCopy.run(DDHelper.java:344) at org.openide.filesystems.FileUtil$2.run(FileUtil.java:447) at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:127) at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:641) at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:431) at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:451)
Created attachment 149439 [details] stacktrace
This old bug may not be relevant anymore. If you can still reproduce it in 8.2 development builds please reopen this issue. Thanks for your cooperation, NetBeans IDE 8.2 Release Boss