java.lang.NullPointerException
   at org.netbeans.modules.xml.schema.completion.util.CompletionContextImpl.populateNamespaces(CompletionContextImpl.java:370)
   at org.netbeans.modules.xml.schema.completion.util.CompletionContextImpl.initContext(CompletionContextImpl.java:462)
   at org.netbeans.modules.xml.schema.completion.CompletionQuery.getCompletionItems(CompletionQuery.java:357)
   at org.netbeans.modules.xml.schema.completion.CompletionQuery$ModelTask.run(CompletionQuery.java:327)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:419)
   at org.netbeans.modules.xml.schema.completion.CompletionQuery.createResultsAndTimedWait(CompletionQuery.java:189)
   at org.netbeans.modules.xml.schema.completion.CompletionQuery.query(CompletionQuery.java:137)
   at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:223)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)