I'm using MAPI with Outlook 98 as a client. When I signon and then run my program and try to open a form based on a form class derived from codebook, I get the error message:

"This file is incompatible with the current version of Visual
FoxPro. Run 30UPDATE.PRG to update the file to the current
version."

When I remove the MAPI signon function - my forms run smoothly. This problem doesn't seem to occur with Outlook 97 installed.