UnableToCompleteException

I am getting an exception when trying to use super dev mode that I don't understand. Stack trace is below.


Compiling 1 permutation
Compiling permutation 0...
[ERROR] Unexpected internal compiler error
java.lang.NullPointerException
at com.google.gwt.dev.jjs.ast.HasName$1.compare(HasName.java:33)
at com.google.gwt.dev.jjs.ast.HasName$1.compare(HasName.java:30)
at java.util.TimSort.countRunAndMakeAscending(TimSort.java:360)
at java.util.TimSort.sort(TimSort.java:220)
at java.util.Arrays.sort(Arrays.java:1512)
at java.util.ArrayList.sort(ArrayList.java:1462)
at java.util.Collections.sort(Collections.java:175)
at com.google.gwt.dev.jjs.ast.JTypeOracle.getCastableDestinationTypes(JTypeOracle.java:734)
at com.google.gwt.dev.jjs.impl.ComputeExhaustiveCastabilityInformation.createCompleteCastMap(ComputeExhaustiveCastabilityInformation.java:44)
at com.google.gwt.dev.jjs.impl.ComputeExhaustiveCastabilityInformation.execImpl(ComputeExhaustiveCastabilityInformation.java:50)
at com.google.gwt.dev.jjs.impl.ComputeExhaustiveCastabilityInformation.exec(ComputeExhaustiveCastabilityInformation.java:32)
at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.normalizeSemantics(JavaToJavaScriptCompiler.java:500)
at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.compilePermutation(JavaToJavaScriptCompiler.java:364)
at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.compilePermutation(JavaToJavaScriptCompiler.java:272)
at com.google.gwt.dev.CompilePerms.compile(CompilePerms.java:198)
at com.google.gwt.dev.ThreadedPermutationWorkerFactory$ThreadedPermutationWorker.compile(ThreadedPermutationWorkerFactory.java:50)
at com.google.gwt.dev.PermutationWorkerFactory$Manager$WorkerThread.run(PermutationWorkerFactory.java:74)
at java.lang.Thread.run(Thread.java:748)
[ERROR] Unrecoverable exception, shutting down
com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries)
at com.google.gwt.dev.javac.CompilationProblemReporter.logAndTranslateException(CompilationProblemReporter.java:112)
at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.compilePermutation(JavaToJavaScriptCompiler.java:459)
at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.compilePermutation(JavaToJavaScriptCompiler.java:272)
at com.google.gwt.dev.CompilePerms.compile(CompilePerms.java:198)
at com.google.gwt.dev.ThreadedPermutationWorkerFactory$ThreadedPermutationWorker.compile(ThreadedPermutationWorkerFactory.java:50)
at com.google.gwt.dev.PermutationWorkerFactory$Manager$WorkerThread.run(PermutationWorkerFactory.java:74)
at java.lang.Thread.run(Thread.java:748)
[ERROR] Not all permutation were compiled , completed (0/1)
[WARN] recompile failed
[WARN] continuing to serve previous version

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