Upgrade from June CTP to Sept CTP - BKM

I've had hassles on a 64-bit platform that also has SQL 2000 installed. The Sept CTP install errors due to a DLL already registered as a 32-bit proc (MSMQTask).
This CTP doesn't seem to work well with the June CTP either, I get errors when trying to object browse and cannot get any SQL Agent info on servers running the June CTP. It may be related to the DLL problem--or not. I used the uninstall tool prior to loading this CTP, so I don't think it's related to the earlier version. More likely, I'll end up uninstalling 2000 and attempting to get the Sept CTP solid before adding 2000 back. Guess I'd better research that path before I go down it...