1.Install GEP to eclipse3.7sp1
2. create a war project named: TestWar
3. create a html file and input the body such as "hello"
4. deploy this web project: right click this project and click run as
5. Change the name of the project: right click the project-
>Refactor >rename->change the name to : TestWar123
6. This project can be redeployed automatically but problem pops up and displayed below:
'Publishing to Apache Geronimo v2.2 Server at localhost..' has encountered a problem.
Module config Id not found for undeployment.
Module config Id not found for undeployment java.lang.NullPointerException