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Build: NetBeans IDE Dev (Build 201707240001) VM: Java HotSpot(TM) 64-Bit Server VM, 9+178, Java(TM) SE Runtime Environment, 9+178 OS: Windows 7 User Comments: java1cprog: I do not know. Stacktrace: java.lang.IllegalArgumentException: Called DataObject.find on null at org.openide.loaders.DataObject.find(DataObject.java:608) at org.netbeans.modules.apisupport.project.ui.ImportantFilesNodeFactory$SuiteImportantFilesChildren.createNodes(ImportantFilesNodeFactory.java:361) at org.netbeans.modules.apisupport.project.ui.ImportantFilesNodeFactory$SuiteImportantFilesChildren.createNodes(ImportantFilesNodeFactory.java:322) at org.openide.nodes.Children$Keys$KE.nodes(Children.java:1679) at org.openide.nodes.ChildrenArray.nodesFor(ChildrenArray.java:149) at org.openide.nodes.EntrySupportDefault$Info.nodes(EntrySupportDefault.java:805)
Created attachment 164821 [details] stacktrace
Created attachment 165008 [details] stacktrace Changing visibility of Java class?