MyEclipse中Could not create the view: An unexpected exception was thrown.

MyEclipse版本：

Version: 10.7
Build id: 10.7-20121026

在运行一段时间后

Servers面板就出现错误：

异常输出:

java.lang.NullPointerException
	at com.genuitec.eclipse.ast.deploy.core.Deployment.<init>(Unknown Source)
	at com.genuitec.eclipse.ast.deploy.core.ModuleDeployment.<init>(Unknown Source)
	at com.genuitec.eclipse.ast.deploy.core.WebDeployment.<init>(Unknown Source)
	at com.genuitec.eclipse.ast.deploy.core.Deployment.create(Unknown Source)
	at com.genuitec.eclipse.ast.deploy.core.DeploymentManager.loadFromPreferences(Unknown Source)
	at com.genuitec.eclipse.ast.deploy.core.DeploymentManager.init(Unknown Source)
	at com.genuitec.eclipse.ast.deploy.core.DeploymentManager.<init>(Unknown Source)
	at com.genuitec.eclipse.ast.deploy.core.DeploymentManager.getDefault(Unknown Source)
	at com.genuitec.eclipse.ast.deploy.core.ui.ServerTreeViewer$ServerTreeContentProvider.inputChanged(Unknown Source)
	at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:276)
	at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1690)
	at com.genuitec.eclipse.ast.deploy.core.ui.ServerTreeViewer.<init>(Unknown Source)
	at com.genuitec.eclipse.ast.deploy.core.ui.ServerView.createPartControl(Unknown Source)
	at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:375)
	at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:229)
	at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
	at org.eclipse.ui.internal.WorkbenchPage$ActivationList.setActive(WorkbenchPage.java:4317)
	at org.eclipse.ui.internal.WorkbenchPage$18.runWithException(WorkbenchPage.java:3359)
	at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
	at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
	at org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1600)
	at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4140)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2609)
	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:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	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)
	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:597)
	at com.genuitec.pulse.eclipse.launcher.Main.main(Main.java:110)

参见：

http://blog.csdn.net/gzu211/article/details/8585381

解决办法：

1. Shut down the workspace.

2. Delete  the file com.genuitec.eclipse.ast.deploy.core.prefs which is located at <workspace dir>/.metadata/.plugins/org.eclipse.core.runtime/.settings/com.genuitec.eclipse.ast.deploy.core.prefs

3. Start the IDE.

亲测有效