I created a cutom form with several hidden fields. All
the emails using this form cannot be previewed now. In
the preview pane, it says This item contains active
content that cannot be displayed in the preview pane.
Open the item to read its contents. When I open the
message, it looks no different. Thanks.
This is normal behavior for a form that has or has ever had code behind it.

Signature
Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
>I created a cutom form with several hidden fields. All
> the emails using this form cannot be previewed now. In
> the preview pane, it says This item contains active
> content that cannot be displayed in the preview pane.
> Open the item to read its contents. When I open the
> message, it looks no different. Thanks.