BCM sometimes has what's known as a "forms cache" problem. Clearing the
cache usually fixes it. Choose Tools | Options | Other | Advanced Options |
Custom Forms, then click Manage Forms, then Clear Cache.

Signature
Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
> With my business contact I get the following error:
> The custom fomr could not be opend outlook will use an
> outlook form instead. the form required to view this
> message cannot be displayed. Contact your adminstrator.
> I have no idea about custom forms and only used the
> default. What should I do?