Artifact transform

After exporting the contents of an RRC project attempted to run a 'requirements composer artifact transfom' transformation within RSA. Although the 'validate configuration' completed successfully the artifact transfom aborted reported:

Transformation execution status.
java.lang.ClassCastException: com.ibm.rdm.ba.usecasecontext.impl.SystemBoundaryImpl incompatible with com.ibm.rdm.ba.usecasecontext.UsecaseRef
com.ibm.rdm.ba.usecasecontext.impl.SystemBoundaryImpl incompatible with com.ibm.rdm.ba.usecasecontext.UsecaseRef
Transform context stack
com.ibm.rdm.ba.usecasecontext.impl.SystemBoundaryImpl incompatible with com.ibm.rdm.ba.usecasecontext.UsecaseRef
Transform Requirements Composer artifact transform: Element "Create Use Case Diagram Rule" was executing source "com.ibm.xtools.transform.rrc.transform.metatype.RRCArtifactConfigElement@8000800"
Transform Requirements Composer artifact transform: Element "com.ibm.xtools.transform.rrc.transform.UsecaseDiagramToUmlUseCaseDiagramTransform_RRCArtifactExtractor" was executing source ""
Transform Requirements Composer artifact transform: Element "com.ibm.xtools.transform.rrc.transform.UsecaseToUmlUsecaseTransform_RRCArtifactExtractor" was executing source ""

Does the problem lie with the RRC artifacts of the RSA setup?

Thanks
Mike