CiscoWorks LMS 2.5 doesn’t recognize 6504E switches

I saw this problem with RME (Resource Manager Essentials)4.0.3 and upgraded to version 4.0.4. All other Cisco routers and switches are detected fine via SNMP and show up properly under device management, but the 6504E layer 3 switches show up as unknown devices. I contacted Cisco about it and am waiting for a callback, but was wondering if anyone else has encountered this issue?