[rules-dev] Failure to load module 'org.drools.guvnor.Guvnor'

Hi All , When i try to debug the Guvnor using eclipse and GWT shell i am getting below error can some one please let me know what is the issue [ERROR] Failure to load module 'org.drools.guvnor.Guvnor' java.lang.NoSuchMethodError: org.eclipse.jdt.internal.compiler.lookup.ProblemReferenceBinding.closestMatch()Lorg/eclipse/jdt/internal/compiler/lookup/ReferenceBinding; at com.google.gwt.dev.javac.LongFromJSNIChecker$CheckingVisitor.findClass(LongFromJSNIChecker.java:195) at com.google.gwt.dev.javac.LongFromJSNIChecker$CheckingVisitor.getMethod(LongFromJSNIChecker.java:223) at com.google.gwt.dev.javac.LongFromJSNIChecker$CheckingVisitor.checkMethodRef(LongFromJSNIChecker.java:100) at com.google.gwt.dev.javac.LongFromJSNIChecker$CheckingVisitor.checkRefs(LongFromJSNIChecker.java:140) at com.google.gwt.dev.javac.LongFromJSNIChecker$CheckingVisitor.endVisit(LongFromJSNIChecker.java:63) at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:242) at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1239) at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.traverse(CompilationUnitDeclaration.java:687) at com.google.gwt.dev.javac.LongFromJSNIChecker.check(LongFromJSNIChecker.java:307) at com.google.gwt.dev.javac.LongFromJSNIChecker.check(LongFromJSNIChecker.java:297) at com.google.gwt.dev.javac.CompilationUnitInvalidator.validateCompilationUnits(CompilationUnitInvalidator.java:138) at com.google.gwt.dev.javac.CompilationState.compile(CompilationState.java:123) at com.google.gwt.dev.cfg.ModuleDef.updateTypeOracle(ModuleDef.java:477) at com.google.gwt.dev.cfg.ModuleDef.getTypeOracle(ModuleDef.java:324) at com.google.gwt.dev.GWTShell$BrowserWidgetHostImpl.createModuleSpaceHost(GWTShell.java:252) at com.google.gwt.dev.shell.ie.BrowserWidgetIE6$External.gwtOnLoad(BrowserWidgetIE6.java:72) at com.google.gwt.dev.shell.ie.BrowserWidgetIE6$External.invoke(BrowserWidgetIE6.java:139) at com.google.gwt.dev.shell.ie.IDispatchImpl.Invoke(IDispatchImpl.java:294) at com.google.gwt.dev.shell.ie.IDispatchImpl.method6(IDispatchImpl.java:194) at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:117) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1925) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2966) at com.google.gwt.dev.GWTShell.pumpEventLoop(GWTShell.java:720) at com.google.gwt.dev.GWTShell.run(GWTShell.java:593) at com.google.gwt.dev.GWTShell.main(GWTShell.java:357)