teamAccept ant task in M3a throws an exception

My jazz server is M3a based and so is my linux based build engine. I have a bootstrap.xml file which I run first to download the build artifacts from the repository. The teamAccept task in the bootstrap.xml throes an exception:

com.ibm.team.repository.common.TeamRepositoryException: org.eclipse.emf.ecore.resource.Resource$IOWrappedException: Feature 'stateExtensions' not found. (, 14, 234)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:67)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:521)
at com.ibm.team.repository.transport.client.RemoteTeamService.getAppropriateException(RemoteTeamService.java:865)
at com.ibm.team.repository.transport.client.RemoteTeamService.executeMethod(RemoteTeamService.java:424)
at com.ibm.team.repository.transport.client.RemoteTeamService.invoke(RemoteTeamService.java:195)
at com.ibm.team.repository.transport.client.ServiceInvocationHandler.invoke(ServiceInvocationHandler.java:43)
at $Proxy0.describe(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)


Creating a new repository workspace or a whole new build definition file from scratch did not help fix this. Any help is greatly appreciated.

Regards,
Ashish