java.util.ConcurrentModificationException: This token sequence is no longer valid. Underlying token hierarchy has been modified: 202 != 203
        at org.netbeans.api.lexer.TokenSequence.checkModCount(TokenSequence.java:649)
        at org.netbeans.api.lexer.TokenSequence.moveIndex(TokenSequence.java:389)
        at org.netbeans.api.lexer.TokenSequence.moveLast(TokenSequence.java:568)
        at org.netbeans.api.java.source.TreeUtilities.pathFor(TreeUtilities.java:141)
        at org.netbeans.api.java.source.TreeUtilities.pathFor(TreeUtilities.java:92)
        at org.netbeans.api.java.source.TreeUtilities.pathFor(TreeUtilities.java:88)
        at org.netbeans.modules.java.editor.semantic.MarkOccurencesHighlighter.processImpl(MarkOccurencesHighlighter.java:125)
        at org.netbeans.modules.java.editor.semantic.MarkOccurencesHighlighter.run(MarkOccurencesHighlighter.java:99)
        at org.netbeans.modules.java.editor.semantic.MarkOccurencesHighlighter.run(MarkOccurencesHighlighter.java:56)
[catch] at org.netbeans.api.java.source.JavaSource$CompilationJob.run(JavaSource.java:1146)
        at java.util.concurrent.Executors$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:885)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
        at java.lang.Thread.run(Thread.java:619)