Cannot unregister an OCX with regsvr32..

Ok, interesting problem here :)

The problem is with good old MSCAL.OCX (evil, evil component). I originally had version 10.0 installed on this machine, correctly registered and working fine. Then today I needed to compile an old VB6 dll, that requires me to use Version 8.00 of MScal.

So I unregister version 10, rename it, copy in version 8, and register it with regsvr32.

I compiled my dll (which worked fine), so then wanted to restore version 10 of mscal.

start->run-> regsvr32.exe /u mscal.ocx

and I get an error message.

"DllUnregisterServer in mscal.ocx failed. Return code was: 0x80004005"

Looking up this error message in winerror.h gives me the extreamly helpful:

"unspecified error"

I suspect it might be something to do with the classID's, but i'm not sure. Currently looknig through the registry to check them..but i'm not confident I will find anything wrong there.


Anyone got any ideas of what to try from here? Any help/suggestion would be greatly appreciated :)

Thanks

spud/pete

Managed to get it working in the end - turned out to be a classID problem as suspected. There were two class ID's in the registry for the same ocx - removing them, rebooting and then re-registering the ocx solved the issue.