Can't compile grails Tomcat plugin

I'm using Netbeans to build a Grails app, while I have used this fine before on this new computer I can not get even the basic project to compile and run. I am getting errors around compili开发者_C百科ng the Tomcat plugin. If I uninstall the plugin it and use Jetty instead it will compile but the project isn't set up for Jetty and is missing files.

Below is the error I'm getting I'm thinking it is some issue with my classpath but I just don't know where to start any help would be much appreciated.

java.lang.NoClassDefFoundError: org/apache/catalina/startup/Tomcat$ExistingStandardWrapper

Update I have tried grails clean, and used both grails 1.2.0 and 1.3.1

Update The project I've tried with tomcat is the base project generated by grails.

When you say "but the project isn't set up for Jetty and is missing files." what do you have in there that maybe clashing with Tomcat? It sounds like you must be using some specific tomcat functionality.