Unexpected internal compiler error java.lang.NoSuchFieldError: warningThreshold when building

[JeffN]

I get this error when building my project. I have seen other post
stating to put the GWT at the top of my classpath and this has not
helped at all... I am more then willing to give any info to help me
resolve this issue.

[ERROR] Unexpected internal compiler error
[java] java.lang.NoSuchFieldError: warningThreshold
[java] at
com.google.gwt.dev.javac.JdtCompiler.getCompilerOptions(JdtCompiler.java:
413)
[java] at com.google.gwt.dev.javac.JdtCompiler
$CompilerImpl.<init>(JdtCompiler.java:228)
[java] at
com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:700)
[java] at com.google.gwt.dev.javac.CompilationStateBuilder
$CompileMoreLater.compile(CompilationStateBuilder.java:235)
[java] at
com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:
447)
[java] at
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:
370)
[java] at
com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:
360)
[java] at
com.google.gwt.dev.Precompile.precompile(Precompile.java:252)
[java] at
com.google.gwt.dev.Precompile.precompile(Precompile.java:233)
[java] at
com.google.gwt.dev.Precompile.precompile(Precompile.java:145)
[java] at com.google.gwt.dev.Compiler.run(Compiler.java:232)
[java] at com.google.gwt.dev.Compiler.run(Compiler.java:198)
[java] at com.google.gwt.dev.Compiler$1.run(Compiler.java:170)
[java] at
com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:88)
[java] at
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:
82)
[java] at com.google.gwt.dev.Compiler.main(Compiler.java:177)

[Zoran Polic]

Try to change your libraries order under Java Build Path --> Order and Export