Application doesn't start up

Hello,
my gwt application doesn't start anymore since last night. I didn't
change something but I've got a error message when I start the
application on my browser.

java.lang.NullPointerException: null
at
com.google.gwt.dev.javac.JsniChecker.getSuppressedWarnings(JsniChecker.java:
466)
at com.google.gwt.dev.javac.JsniChecker
$JsniDeclChecker.visit(JsniChecker.java:121)
at
org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:
209)
at
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:
1294)
at
org.eclipse.jdt.internal.compiler.ast.QualifiedAllocationExpression.traverse(QualifiedAllocationExpression.java:
478)
at
org.eclipse.jdt.internal.compiler.ast.MessageSend.traverse(MessageSend.java:
576)
at org.eclipse.jdt.internal.compiler.ast.Block.traverse(Block.java:
127)
at
org.eclipse.jdt.internal.compiler.ast.ForStatement.traverse(ForStatement.java:
401)
at org.eclipse.jdt.internal.compiler.ast.Block.traverse(Block.java:
127)
at
org.eclipse.jdt.internal.compiler.ast.ForStatement.traverse(ForStatement.java:
401)
at org.eclipse.jdt.internal.compiler.ast.Block.traverse(Block.java:
127)
at
org.eclipse.jdt.internal.compiler.ast.IfStatement.traverse(IfStatement.java:
245)
at
org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:
239)
at
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:
1294)
at
org.eclipse.jdt.internal.compiler.ast.QualifiedAllocationExpression.traverse(QualifiedAllocationExpression.java:
478)
at
org.eclipse.jdt.internal.compiler.ast.LocalDeclaration.traverse(LocalDeclaration.java:
245)
at
org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration.traverse(ConstructorDeclaration.java:
505)
at
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:
1239)
at
org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.traverse(CompilationUnitDeclaration.java:
687)
at com.google.gwt.dev.javac.JsniChecker.check(JsniChecker.java:
499)
at com.google.gwt.dev.javac.JsniChecker.check(JsniChecker.java:
448)
at com.google.gwt.dev.javac.CompilationStateBuilder
$CompileMoreLater
$UnitProcessorImpl.process(CompilationStateBuilder.java:69)
at com.google.gwt.dev.javac.JdtCompiler
$CompilerImpl.process(JdtCompiler.java:195)
at
org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:444)
at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:
617)
at com.google.gwt.dev.javac.CompilationStateBuilder
$CompileMoreLater.compile(CompilationStateBuilder.java:193)
at
com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:
390)
at
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:
275)
at
com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:
325)
at com.google.gwt.dev.DevModeBase
$UiBrowserWidgetHostImpl.createModuleSpaceHost(DevModeBase.java:104)
at
com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:
180)
at
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:
510)
at
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:
352)
at java.lang.Thread.run(Unknown Source)

There is no error when I compiled the application. I don't understand
what this error message mean. I've restore an old version of my
project, but the error exists also. can someone help?

Best regards, Robert

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