关于MyEclipse 10.7 部署报错，抛空指针异常的解决办法

Could not create the view: An unexpected exception was thrown. java.lang.NullPointerException at com.genuitec.eclipse.ast.deploy.core.Deployment.(Unknown Source) at com.genuitec.eclipse.ast.deploy.core.ModuleDeployment.(Unknown Source) at com.genuitec.eclipse.ast.deploy.core.WebDeployment.(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.(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.(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.PartPane.setVisible(PartPane.java:313) at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:534) at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:180) at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:270) at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65) at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:473) at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1245) at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:662) at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:570) at org.eclipse.ui.internal.PartSashContainer.createControl(PartSashContainer.java:568) .