Myeclipse错误：Errors occurred during the build. Errors running builder 'DeploymentBuilder' on project 'MyCastBoxAPP' java.lang.NullPointerException

报错起因：

　　当需要替某项目更名（即右键选定项目后选择Refactor->Rename），点击OK后，发生了中断，提示Undo抑或Abort，无论选择哪个，之后都将弹出以下错误提示框

错误描述：

Errors occurred during the build.
　　Errors running builder 'DeploymentBuilder' on project 'MyCastBoxAPP'.
　　java.lang.NullPointerException

同时Servers View也出现报错信息：

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

附上截图：

其Details>>信息如下：

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.Perspective.showView(Perspective.java:2245)
    at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1145)
    at org.eclipse.ui.internal.WorkbenchPage$20.run(WorkbenchPage.java:3921)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3918)
    at org.eclipse.ui.handlers.ShowViewHandler.openView(ShowViewHandler.java:162)
    at org.eclipse.ui.handlers.ShowViewHandler.execute(ShowViewHandler.java:76)
    at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
    at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
    at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
    at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
    at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
    at org.eclipse.ui.menus.CommandContributionItem.handleWidgetSelection(CommandContributionItem.java:829)
    at org.eclipse.ui.menus.CommandContributionItem.access$19(CommandContributionItem.java:815)
    at org.eclipse.ui.menus.CommandContributionItem$5.handleEvent(CommandContributionItem.java:805)
    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: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)

解决方案：

　　1、关闭MyEclipse
　　2、删除报错项目MyCastBoxApp所在工作空间里面的com.genuitec.eclipse.ast.deploy.core.prefs文件，本机路径是：
　　D:\MyEclipseWorkspacesOfALL\JavaEEWorkspaces\.metadata\.plugins\org.eclipse.core.runtime\.settings\com.genuitec.eclipse.ast.deploy.core.prefs（个人采取压缩另存以备份：com.genuitec.eclipse.ast.deploy.core.zip）

　　3、取消MyEclipse自动部署：右键点击项目 -> properties -> Builders（或者直接搜索Builders亦可），将DeploymentBuilder勾选去除（个人认为不必要，因为这是MyEclipse推荐操作，禁用掉会带来其他副作用），详见截图：