eclipse 3.1.1自动关闭，为何？

eclipse 3.1.1+中文语言包+Myeclipse 4.02+NitroX 3，常常在开启一个复杂的properties文件时，出现ide自动关闭的情况，此时未保存的修改全部丢失。
检查log，发现如下字样：
!ENTRY org.eclipse.ui 4 4 2005-10-13 17:13:41.734
!MESSAGE Unhandled event loop exception

!ENTRY org.eclipse.ui 4 0 2005-10-13 17:13:41.734
!MESSAGE No more handles
!STACK 0
org.eclipse.swt.SWTError: No more handles
at org.eclipse.swt.SWT.error(SWT.java:2968)
at org.eclipse.swt.SWT.error(SWT.java:2865)
at org.eclipse.swt.SWT.error(SWT.java:2836)
at org.eclipse.swt.widgets.Widget.error(Widget.java:395)
at org.eclipse.swt.widgets.Control.createHandle(Control.java:482)
at org.eclipse.swt.widgets.Composite.createHandle(Composite.java:229)
at org.eclipse.swt.widgets.ToolBar.createHandle(ToolBar.java:231)
at org.eclipse.swt.widgets.Control.createWidget(Control.java:497)
at org.eclipse.swt.widgets.Scrollable.createWidget(Scrollable.java:131)
at org.eclipse.swt.widgets.ToolBar.createWidget(ToolBar.java:331)
at org.eclipse.swt.widgets.Control.<init>(Control.java:97)
at org.eclipse.swt.widgets.Scrollable.<init>(Scrollable.java:72)
at org.eclipse.swt.widgets.Composite.<init>(Composite.java:87)
at org.eclipse.swt.widgets.ToolBar.<init>(ToolBar.java:98)
at org.eclipse.jface.action.ToolBarManager.createControl(ToolBarManager.java:99)
at org.eclipse.jface.action.ToolBarContributionItem.fill(ToolBarContributionItem.java:190)
at org.eclipse.jface.action.CoolBarManager.update(CoolBarManager.java:907)
at org.eclipse.ui.internal.WorkbenchWindow.updateActionBars(WorkbenchWindow.java:2486)
at org.eclipse.ui.internal.WorkbenchWindow.largeUpdateEnd(WorkbenchWindow.java:2533)
at org.eclipse.ui.internal.Workbench.largeUpdateEnd(Workbench.java:2429)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2298)
at org.eclipse.ui.internal.WorkbenchPage.access$9(WorkbenchPage.java:2287)
at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2273)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2268)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2249)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:371)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:334)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:251)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:131)
at org.eclipse.jdt.internal.ui.actions.OpenActionUtil.open(OpenActionUtil.java:49)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:169)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:153)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:222)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:198)
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:296)
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.open(PackageExplorerPart.java:869)
at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:741)
at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1044)
at org.eclipse.core.runtime.Platform.run(Platform.java:783)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:148)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:739)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:968)
at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1067)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:243)
at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:238)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:277)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3080)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2713)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)
at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
at org.eclipse.core.launcher.Main.run(Main.java:973)
at org.eclipse.core.launcher.Main.eclipse_main(Main.java:948)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.m7.installer.util.NitroxMain$1.run(NitroxMain.java:29)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

注意到这一句：
at com.m7.installer.util.NitroxMain$1.run(NitroxMain.java:29)
我的NitroX是用的网上的注册机，安装的studio版本，难道和这个有关？
大家遇到过类似问题吗？