I'm having a problem starting a MAPIsession. The code works fine on some older machines, but a new NT box is reporting "incorrect data type" I'm wondering if the call to MAPI.DLL is defaulting to MAPI32.DLL and there'e a backward compatibility issue. One difference is that the Classid appears in lower case on one machine an upper case on the other - same CHRS though.

Thanks for any help.
Martin Glynn