org.netbeans.modules.parsing.spi.ParseException
        at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:190)
        at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:101)
        at org.netbeans.modules.languages.features.CompletionProviderImpl$CompletionTaskImpl$1.run(CompletionProviderImpl.java:357)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)
Caused by: java.lang.NullPointerException
        at org.netbeans.modules.languages.features.CompletionProviderImpl$CompletionTaskImpl.addParserTags(CompletionProviderImpl.java:376)
        at org.netbeans.modules.languages.features.CompletionProviderImpl$CompletionTaskImpl.access$300(CompletionProviderImpl.java:185)
        at org.netbeans.modules.languages.features.CompletionProviderImpl$CompletionTaskImpl$1$1.run(CompletionProviderImpl.java:362)
        at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:131)
        at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:115)
        at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:188)
        ... 4 more


AND


org.netbeans.modules.parsing.spi.ParseException
        at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:190)
        at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:101)
        at org.netbeans.modules.languages.features.ASTBrowserTopComponent$3.run(ASTBrowserTopComponent.java:244)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused by: java.lang.NullPointerException
        at org.netbeans.modules.languages.features.ASTBrowserTopComponent$3$1.run(ASTBrowserTopComponent.java:248)
        at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:131)
        at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:115)
        at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:188)
        ... 11 more