解决myeclipse10.x的Servers产生的at com.genuitec.eclipse.ast.deploy.core.Deployment.<init>(Unknown Source)错

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

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.