java.lang.AssertionError at org.netbeans.modules.java.source.JavaFileFilterQuery.getFilter(JavaFileFilterQuery.java:60) at org.netbeans.modules.java.source.parsing.JavacParser.(JavacParser.java:223) at org.netbeans.modules.java.source.parsing.JavacParserFactory.createParser(JavacParserFactory.java:64) at org.netbeans.modules.java.source.parsing.JavacParserFactory.createParser(JavacParserFactory.java:56) at org.netbeans.modules.parsing.impl.SourceCache.getParser(SourceCache.java:154) at org.netbeans.modules.parsing.impl.SourceCache.getResult(SourceCache.java:167) at org.netbeans.modules.parsing.api.ResultIterator.getParserResult(ResultIterator.java:115) at org.netbeans.modules.parsing.api.ResultIterator.getParserResult(ResultIterator.java:128) at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery$Task.run(JavaCompletionProvider.java:4503) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:123) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:105) at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:191) at org.netbeans.modules.parsing.impl.TaskProcessor.runWhenScanFinished(TaskProcessor.java:222) at org.netbeans.modules.parsing.api.ParserManager.parseWhenScanFinished(ParserManager.java:100) at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.query(JavaCompletionProvider.java:278) at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:218) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)