I use sdt to update my client site. Today I added a field to 2 tables. I am getting the error message

Error 1426
Message: ole error code 0x0error
line#: 0
Code: Ole Error Code 0x80040112: appropriate license for tis class not found.
Method: AddObject
Object: frmSDT.frmSDT

I found reference to this message under Frequently Asked Questions in the User Guide
It suggesed
Run \stonefield\sdt\utility\fox.reg. Didn't help

Any suggestions???????