Error--deploy when deploying MyEclipse project to Tomcat

Error message:

Project name could not being redeployed because it could not being completely removed inthe undeployment phase. The most common cause of this problem are attempting to redeploy when the server is Running,which have locked one or more F Iles.
To correct the deployment you'll need to stop the server and then redeploy the project before restarting the server.

This problem occurs because:

The. jar file referenced in the. classpath file in the project root directory is inconsistent with the. jar in the project.

Workaround:

Refer to the. jar file and the. jar file in the project Lib folder for the Classpathentry property in the. classpath file for comparison. Fixed non-existent. jar file references and padded unreferenced. Re-deployment is OK.

Error--deploy when deploying MyEclipse project to Tomcat