If you load the generator and don't see anything this is probably because you have exported with the wrong XMI parameters.

If you are using EnterpriseArchitect, use the following settings:
Uncheck "Enable full EA Roundtrip"
Set XMI Type to "UML 1.3 (XMI 1.0)"
Check "Unisys/Rose Format"
Uncheck "Exclude EA Tagged Values"
Uncheck "Export Diagrams"
Uncheck "Format XMI Output"
Uncheck "Write Log file"
Uncheck "Generate Diagram Images"