原来在3.3下面用viplugin插件很正常。
现在换到3.4下面用这个插件，在关闭eclipse的时候，偶尔会闪过一个错误对话框。
如果是直接把插件覆盖到elicpse目录，出现错误的几率少点，用links的方法，出现这个错误的几率比较高。

下面是log.
!SESSION 2008-08-18 22:31:32.205 -----------------------------------------------
eclipse.buildId=I20080617-2000
java.version=1.6.0_07
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=zh_CN
Command-line arguments:  -os win32 -ws win32 -arch x86

!ENTRY org.eclipse.ui.workbench 4 2 2008-08-18 22:32:09.703
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench".
!STACK 0
java.lang.NullPointerException: Cannot set a null prefix table
    at org.eclipse.jface.bindings.CachedBindingSet.setPrefixTable(CachedBindingSet.java:346)
    at org.eclipse.jface.bindings.BindingManager.recomputeBindings(BindingManager.java:1765)
    at org.eclipse.jface.bindings.BindingManager.contextManagerChanged(BindingManager.java:689)
    at org.eclipse.core.commands.contexts.ContextManager.fireContextManagerChanged(ContextManager.java:152)
    at org.eclipse.core.commands.contexts.ContextManager.removeActiveContext(ContextManager.java:232)
    at org.eclipse.ui.internal.contexts.ContextAuthority.updateContext(ContextAuthority.java:767)
    at org.eclipse.ui.internal.contexts.ContextAuthority.deactivateContext(ContextAuthority.java:362)
    at org.eclipse.ui.internal.contexts.ContextService.deactivateContext(ContextService.java:140)
    at org.eclipse.ui.internal.contexts.ContextService.deactivateContexts(ContextService.java:154)
    at org.eclipse.ui.internal.contexts.SlaveContextService.dispose(SlaveContextService.java:240)
    at org.eclipse.ui.internal.services.ServiceLocator.dispose(ServiceLocator.java:142)
    at org.eclipse.ui.internal.WorkbenchWindow.hardClose(WorkbenchWindow.java:1626)
    at org.eclipse.ui.internal.WorkbenchWindow.busyClose(WorkbenchWindow.java:722)
    at org.eclipse.ui.internal.WorkbenchWindow.access$0(WorkbenchWindow.java:698)
    at org.eclipse.ui.internal.WorkbenchWindow$3.run(WorkbenchWindow.java:814)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchWindow.close(WorkbenchWindow.java:812)
    at org.eclipse.jface.window.WindowManager.close(WindowManager.java:109)
    at org.eclipse.ui.internal.Workbench$16.run(Workbench.java:912)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
    at org.eclipse.ui.internal.Workbench.busyClose(Workbench.java:909)
    at org.eclipse.ui.internal.Workbench.access$15(Workbench.java:838)
    at org.eclipse.ui.internal.Workbench$23.run(Workbench.java:1082)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.Workbench.close(Workbench.java:1080)
    at org.eclipse.ui.internal.Workbench.close(Workbench.java:1052)
    at org.eclipse.ui.internal.WorkbenchWindow.busyClose(WorkbenchWindow.java:719)
    at org.eclipse.ui.internal.WorkbenchWindow.access$0(WorkbenchWindow.java:698)
    at org.eclipse.ui.internal.WorkbenchWindow$3.run(WorkbenchWindow.java:814)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchWindow.close(WorkbenchWindow.java:812)
    at org.eclipse.jface.window.Window.handleShellCloseEvent(Window.java:741)
    at org.eclipse.jface.window.Window$3.shellClosed(Window.java:687)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:92)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1027)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1012)
    at org.eclipse.swt.widgets.Decorations.closeWidget(Decorations.java:307)
    at org.eclipse.swt.widgets.Decorations.WM_CLOSE(Decorations.java:1632)
    at org.eclipse.swt.widgets.Control.windowProc(Control.java:3789)
    at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:337)
    at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1565)
    at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:1937)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:4528)
    at org.eclipse.swt.internal.win32.OS.DefWindowProcW(Native Method)
    at org.eclipse.swt.internal.win32.OS.DefWindowProc(OS.java:2365)
    at org.eclipse.swt.widgets.Shell.callWindowProc(Shell.java:477)
    at org.eclipse.swt.widgets.Control.windowProc(Control.java:3877)
    at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:337)
    at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1565)
    at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:1937)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:4528)
    at org.eclipse.swt.internal.win32.OS.DefWindowProcW(Native Method)
    at org.eclipse.swt.internal.win32.OS.DefWindowProc(OS.java:2365)
    at org.eclipse.swt.widgets.Shell.callWindowProc(Shell.java:477)
    at org.eclipse.swt.widgets.Control.windowProc(Control.java:3877)
    at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:337)
    at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1565)
    at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:1937)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:4528)
    at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
    at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2370)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3420)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2382)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2198)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:488)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
    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:382)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1236)