java.lang.AssertionError: Should be a folder: C:\Users\Mark\Documents\NetBeansProjects\FireFly\build\classes\com\areaofthoughts\fireListeners@f5a1befa:17ee7bc
   at org.netbeans.modules.masterfs.watcher.Watcher$Ext.unregister(Watcher.java:247)
   at org.netbeans.modules.masterfs.watcher.Watcher.unregister(Watcher.java:130)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.removeFileChangeListener(BaseFileObj.java:508)
   at org.openide.filesystems.FileUtil$Holder.run(FileUtil.java:554)
   at org.openide.util.lookup.implspi.ActiveQueue$Impl.run(ActiveQueue.java:109)
   at java.lang.Thread.run(Thread.java:722)