急！！eclipse WindowBuilder打不开

司机小王 2012-06-21 09:40:08

WindowBuilder的design模式打开的时候报错：

Internal Error
WindowBuilder encountered unexpected internal error.

This could be caused by a WindowBuilder bug or by a misconfiguration issue, conflict, partial update, etc.

org.eclipse.wb.internal.core.utils.check.AssertionFailedException: null argument

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Stack trace:
org.eclipse.wb.internal.core.utils.check.AssertionFailedException: null argument
at org.eclipse.wb.internal.core.utils.check.Assert.fail(Assert.java:225)
at org.eclipse.wb.internal.core.utils.check.Assert.isNotNull(Assert.java:174)
at org.eclipse.wb.internal.core.utils.check.Assert.isNotNull(Assert.java:159)
at org.eclipse.wb.internal.core.utils.reflect.ReflectionUtils.invokeMethod(ReflectionUtils.java:859)
at org.eclipse.wb.internal.swt.support.ControlSupport.getPreferredSize(ControlSupport.java:135)
at org.eclipse.wb.internal.swt.model.widgets.ControlInfo.refresh_afterCreate(ControlInfo.java:117)
at org.eclipse.wb.core.model.ObjectInfo.refreshCreate0(ObjectInfo.java:552)
at org.eclipse.wb.core.model.ObjectInfo.access$0(ObjectInfo.java:546)
at org.eclipse.wb.core.model.ObjectInfo$5$1.run(ObjectInfo.java:486)
at org.eclipse.wb.internal.core.utils.execution.ExecutionUtils.runDesignTime(ExecutionUtils.java:139)
at org.eclipse.wb.core.model.ObjectInfo$5.run(ObjectInfo.java:484)
at org.eclipse.wb.core.model.ObjectInfo.execRefreshOperation(ObjectInfo.java:514)
at org.eclipse.wb.core.model.ObjectInfo.refresh(ObjectInfo.java:482)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:583)
at org.eclipse.wb.internal.core.editor.DesignPage.access$9(DesignPage.java:525)
at org.eclipse.wb.internal.core.editor.DesignPage$8$1.run(DesignPage.java:452)
at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:180)
at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:150)
at org.eclipse.swt.widgets.Display.syncExec(Display.java:4683)
at org.eclipse.wb.internal.core.editor.DesignPage$8.run(DesignPage.java:449)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:507)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF_withProgress(DesignPage.java:468)
at org.eclipse.wb.internal.core.editor.DesignPage.internal_refreshGEF(DesignPage.java:418)
at org.eclipse.wb.internal.core.editor.UndoManager.refreshDesignerEditor(UndoManager.java:381)
at org.eclipse.wb.internal.core.editor.DesignPage.refreshGEF(DesignPage.java:395)
at org.eclipse.wb.internal.core.editor.actions.RefreshAction.run(RefreshAction.java:46)
at org.eclipse.wb.internal.core.editor.actions.DesignPageAction.run(DesignPageAction.java:34)
at org.eclipse.wb.internal.core.editor.errors.JavaExceptionComposite.doRefresh(JavaExceptionComposite.java:87)
at org.eclipse.wb.internal.core.editor.errors.ExceptionComposite$3.widgetSelected(ExceptionComposite.java:129)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:240)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)

求各位大虾指点指点呀

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