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https://issues.apache.org/jira/browse/NETBEANS-3741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17022555#comment-17022555
 ] 

Shevek commented on NETBEANS-3741:
----------------------------------

User directory removed, modules reinstalled, etc, now waiting for netbeans to 
load again. It can take >15 minutes to load sometimes, particularly when 
cleaned out.

Wild guess at how I broke it: Restart netbeans to load a new project, and while 
nb was loading the existing (previously) opened projects, also ask it to open 
the new subproject. Race condition in startup? Waiting for loading to complete, 
THEN opening the new subproject seems OK.

> NetBeans loads, but file tree is broken
> ---------------------------------------
>
>                 Key: NETBEANS-3741
>                 URL: https://issues.apache.org/jira/browse/NETBEANS-3741
>             Project: NetBeans
>          Issue Type: Bug
>    Affects Versions: 11.2
>            Reporter: Shevek
>            Priority: Major
>
> No idea, I'm afraid. I added a module to my build, exited and restarted 
> netbeans (because it can't detect addition of gradle modules) and got this 
> lovely lot, and it looks OK but I can't copy-paste files in the project tree, 
> so I guess I'll restart it again.
> INFO [org.netbeans.modules.autoupdate.pluginimporter.PluginImporter]: 
> Inspecting plugins took 81 ms
> INFO [org.netbeans.modules.autoupdate.pluginimporter.Installer]: 3 available 
> plugins for import in /home/shevek/.netbeans/11.1
> WARNING [org.netbeans.TopSecurityManager]: use of system property 
> netbeans.user has been obsoleted in favor of InstalledFileLocator/Places at 
> org.netbeans.modules.autoupdate.pluginimporter.Installer.getUserDir(Installer.java:167)
> WARNING [org.openide.filesystems.Ordering]: Not all children in / marked with 
> the position attribute: 
> [org-netbeans-modules-lsp-client-bindings-HyperlinkProviderImpl.instance], 
> but some are: [JavaHyperlinkProvider.instance, 
> org.netbeans.modules.j2ee.persistence.editor.hyperlink.NamedQueryHyperlinkProvider.instance,
>  HyperlinkProviderImpl.instance, 
> org-netbeans-modules-editor-url-HyperlinkImpl.instance]
> SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction$8
> java.lang.NullPointerException
>       at 
> org.netbeans.modules.gradle.javaee.web.WebProjectBrowserProvider.getPreferences(WebProjectBrowserProvider.java:119)
>       at 
> org.netbeans.modules.gradle.javaee.web.WebProjectBrowserProvider.removePropertyChangeListener(WebProjectBrowserProvider.java:106)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.activeProjectChanged(ActiveBrowserAction.java:320)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.refreshView(ActiveBrowserAction.java:303)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.access$700(ActiveBrowserAction.java:86)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction$8.run(ActiveBrowserAction.java:295)
>       at 
> org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
>       at 
> org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
>       at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
> [catch] at 
> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
> SEVERE [null]: Last record repeated 2 more times.
> SEVERE [null]: Last record repeated 3 more times.
> INFO [org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater]: 
> Resolving dependencies took: 200 ms
> INFO [org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater]: Complete 
> indexing of 2 binary roots took: 4 ms
> INFO [org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater]: Indexing 
> of: 
> /home/shevek/java/compilerworks/compilerworks-plugin-test-integration/src/test/resources
>  took: 1,279 ms (New or modified files: 2, Deleted files: 0) [Adding 
> listeners took: 0 ms]
> INFO [org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater]: Indexing 
> of: 
> /home/shevek/java/compilerworks/compilerworks-plugin-test-integration/src/main/resources
>  took: 0 ms (New or modified files: 0, Deleted files: 0) [Adding listeners 
> took: 0 ms]
> INFO [org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater]: Indexing 
> of: 
> /home/shevek/java/compilerworks/compilerworks-plugin-test-integration/src/main/java
>  took: 0 ms (New or modified files: 0, Deleted files: 0) [Adding listeners 
> took: 0 ms]
> INFO [org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater]: Indexing 
> of: 
> /home/shevek/java/compilerworks/compilerworks-plugin-test-integration/src/test/java
>  took: 11 ms (New or modified files: 0, Deleted files: 0) [Adding listeners 
> took: 0 ms]
> INFO [org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater]: Complete 
> indexing of 4 source roots took: 1,290 ms (New or modified files: 2, Deleted 
> files: 0) [Adding listeners took: 0 ms]
> SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction$8
> java.lang.NullPointerException
>       at 
> org.netbeans.modules.gradle.javaee.web.WebProjectBrowserProvider.getPreferences(WebProjectBrowserProvider.java:119)
>       at 
> org.netbeans.modules.gradle.javaee.web.WebProjectBrowserProvider.removePropertyChangeListener(WebProjectBrowserProvider.java:106)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.activeProjectChanged(ActiveBrowserAction.java:320)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.refreshView(ActiveBrowserAction.java:303)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.access$700(ActiveBrowserAction.java:86)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction$8.run(ActiveBrowserAction.java:295)
>       at 
> org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
>       at 
> org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
>       at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
> [catch] at 
> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
> SEVERE [null]: Last record repeated 5 more times.
> SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction$8
> java.lang.NullPointerException
>       at 
> org.netbeans.modules.gradle.javaee.web.WebProjectBrowserProvider.getPreferences(WebProjectBrowserProvider.java:119)
>       at 
> org.netbeans.modules.gradle.javaee.web.WebProjectBrowserProvider.removePropertyChangeListener(WebProjectBrowserProvider.java:106)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.activeProjectChanged(ActiveBrowserAction.java:320)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.refreshView(ActiveBrowserAction.java:305)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.access$700(ActiveBrowserAction.java:86)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction$8.run(ActiveBrowserAction.java:295)
>       at 
> org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
>       at 
> org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
>       at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
> [catch] at 
> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
> SEVERE [null]: Last record repeated 2 more times.
> SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction$8
> java.lang.NullPointerException
>       at 
> org.netbeans.modules.gradle.javaee.web.WebProjectBrowserProvider.getPreferences(WebProjectBrowserProvider.java:119)
>       at 
> org.netbeans.modules.gradle.javaee.web.WebProjectBrowserProvider.removePropertyChangeListener(WebProjectBrowserProvider.java:106)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.activeProjectChanged(ActiveBrowserAction.java:320)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.refreshView(ActiveBrowserAction.java:303)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.access$700(ActiveBrowserAction.java:86)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction$8.run(ActiveBrowserAction.java:295)
>       at 
> org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
>       at 
> org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
>       at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
> [catch] at 
> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
> SEVERE [null]: Last record repeated 2 more times.
> SEVERE [null]: Last record repeated 3 more times.
> SEVERE [global]
> java.lang.NullPointerException
>       at 
> org.netbeans.modules.refactoring.java.ui.ContextAnalyzer$NodeToFileObjectTask.run(ContextAnalyzer.java:596)
>       at 
> org.netbeans.modules.refactoring.java.ui.UIUtilities.lambda$runWhenScanFinished$0(UIUtilities.java:1186)
>       at 
> org.netbeans.api.java.source.ui.ScanDialog.runWhenScanFinished(ScanDialog.java:133)
>       at 
> org.netbeans.modules.refactoring.java.ui.UIUtilities.runWhenScanFinished(UIUtilities.java:1181)
>       at 
> org.netbeans.modules.refactoring.java.ui.RefactoringActionsProvider.doCopy(RefactoringActionsProvider.java:173)
>       at 
> org.netbeans.modules.refactoring.api.impl.ActionsImplementationFactory.doCopy(ActionsImplementationFactory.java:156)
>       at 
> org.netbeans.modules.refactoring.spi.impl.CopyAction.performAction(CopyAction.java:51)
>       at 
> org.netbeans.modules.refactoring.spi.impl.RefactoringGlobalAction$ContextAction.actionPerformed(RefactoringGlobalAction.java:172)
>       at 
> org.netbeans.modules.refactoring.impl.ClipboardConvertor$RefactoringPaste$RefactoringPasteType$1.run(ClipboardConvertor.java:124)
>       at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
>       at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
>       at java.awt.EventQueue.access$500(EventQueue.java:97)
>       at java.awt.EventQueue$3.run(EventQueue.java:709)
>       at java.awt.EventQueue$3.run(EventQueue.java:703)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at 
> java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
>       at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
>       at 
> org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)
> [catch] at 
> java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
>       at 
> java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
>       at 
> java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
>       at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
>       at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
>       at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
> SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction$8
> java.lang.NullPointerException
>       at 
> org.netbeans.modules.gradle.javaee.web.WebProjectBrowserProvider.getPreferences(WebProjectBrowserProvider.java:119)
>       at 
> org.netbeans.modules.gradle.javaee.web.WebProjectBrowserProvider.removePropertyChangeListener(WebProjectBrowserProvider.java:106)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.activeProjectChanged(ActiveBrowserAction.java:320)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.refreshView(ActiveBrowserAction.java:303)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction.access$700(ActiveBrowserAction.java:86)
>       at 
> org.netbeans.modules.web.clientproject.browser.ActiveBrowserAction$8.run(ActiveBrowserAction.java:295)
>       at 
> org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
>       at 
> org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
>       at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
> [catch] at 
> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
> SEVERE [null]: Last record repeated 2 more times.
> SEVERE [null]: Last record repeated 2 more times.
> SEVERE [global]
> java.lang.NullPointerException
>       at 
> org.netbeans.modules.refactoring.java.ui.ContextAnalyzer$NodeToFileObjectTask.run(ContextAnalyzer.java:596)
>       at 
> org.netbeans.modules.refactoring.java.ui.UIUtilities.lambda$runWhenScanFinished$0(UIUtilities.java:1186)
>       at 
> org.netbeans.api.java.source.ui.ScanDialog.runWhenScanFinished(ScanDialog.java:133)
>       at 
> org.netbeans.modules.refactoring.java.ui.UIUtilities.runWhenScanFinished(UIUtilities.java:1181)
>       at 
> org.netbeans.modules.refactoring.java.ui.RefactoringActionsProvider.doCopy(RefactoringActionsProvider.java:173)
>       at 
> org.netbeans.modules.refactoring.api.impl.ActionsImplementationFactory.doCopy(ActionsImplementationFactory.java:156)
>       at 
> org.netbeans.modules.refactoring.spi.impl.CopyAction.performAction(CopyAction.java:51)
>       at 
> org.netbeans.modules.refactoring.spi.impl.RefactoringGlobalAction$ContextAction.actionPerformed(RefactoringGlobalAction.java:172)
>       at 
> org.netbeans.modules.refactoring.impl.ClipboardConvertor$RefactoringPaste$RefactoringPasteType$1.run(ClipboardConvertor.java:124)
>       at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
>       at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
>       at java.awt.EventQueue.access$500(EventQueue.java:97)
>       at java.awt.EventQueue$3.run(EventQueue.java:709)
>       at java.awt.EventQueue$3.run(EventQueue.java:703)
>       at java.security.AccessController.doPrivileged(Native Method)
>       at 
> java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
>       at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
>       at 
> org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)
> [catch] at 
> java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
>       at 
> java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
>       at 
> java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
>       at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
>       at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
>       at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)



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