java.lang.NullPointerException
   at org.netbeans.modules.parsing.api.Source.access$1000(Source.java:111)
   at org.netbeans.modules.parsing.api.Source$MySourceAccessor.getCache(Source.java:669)
   at org.netbeans.modules.parsing.impl.DialogBindingEmbeddingProvider.getEmbeddings(DialogBindingEmbeddingProvider.java:83)
   at org.netbeans.modules.parsing.impl.SourceCache.getAllEmbeddings(SourceCache.java:284)
   at org.netbeans.modules.parsing.api.ResultIterator.getEmbeddings(ResultIterator.java:162)
   at org.netbeans.modules.parsing.api.ResultIterator.getParserResult(ResultIterator.java:148)
   at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery$Task.run(JavaCompletionProvider.java:4923)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:154)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:138)
   at org.netbeans.modules.parsing.impl.TaskProcessor$1.call(TaskProcessor.java:202)
   at org.netbeans.modules.parsing.impl.TaskProcessor$1.call(TaskProcessor.java:199)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:168)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:356)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:67)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:199)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:661)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
   at java.lang.Thread.run(Thread.java:662)