问题描述：我在eclipse中点击一个项目中的一个activity的文件-->右键-->选择Team-->show history(查看cvs中的历史文件)后报错了。无法查看到cvs中以前的历史记录了，为什么啊？求帮助啊！！！
报错信息：
java.lang.IllegalArgumentException: Argument not valid
at org.eclipse.swt.SWT.error(SWT.java:4378)
at org.eclipse.swt.SWT.error(SWT.java:4312)
at org.eclipse.swt.SWT.error(SWT.java:4283)
at org.eclipse.swt.custom.SashForm.setWeights(SashForm.java:444)
at org.eclipse.team.internal.ccvs.ui.CVSHistoryPage.createControl(CVSHistoryPage.java:259)
at org.eclipse.team.internal.ui.history.GenericHistoryView.doCreatePage(GenericHistoryView.java:695)
at org.eclipse.ui.part.PageBookView.createPage(PageBookView.java:412)
at org.eclipse.ui.part.PageBookView.partActivated(PageBookView.java:753)
at org.eclipse.team.internal.ui.history.GenericHistoryView.showHistoryPageFor(GenericHistoryView.java:548)
at org.eclipse.team.ui.TeamUI.showInputInView(TeamUI.java:128)
at org.eclipse.team.ui.TeamUI.showHistoryFor(TeamUI.java:116)
at org.eclipse.team.internal.ccvs.ui.actions.ShowResourceInHistoryAction$1.run(ShowResourceInHistoryAction.java:35)
at org.eclipse.team.internal.ccvs.ui.repo.RepositoryManager.run(RepositoryManager.java:765)
at org.eclipse.team.internal.ccvs.ui.actions.CVSAction$2.run(CVSAction.java:360)
at org.eclipse.team.internal.ccvs.ui.actions.CVSAction$3.run(CVSAction.java:369)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.team.internal.ccvs.ui.actions.CVSAction.run(CVSAction.java:366)
at org.eclipse.team.internal.ccvs.ui.actions.ShowResourceInHistoryAction.execute(ShowResourceInHistoryAction.java:31)
at org.eclipse.team.internal.ccvs.ui.actions.CVSAction.run(CVSAction.java:117)
at org.eclipse.team.internal.ui.actions.TeamAction.runWithEvent(TeamAction.java:549)
at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:241)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
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:354)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
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:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
