Could you please try the following to see if it helps:
1. Download the Trusted Application Binaries from http://developer.novell.com/ndk/gwtapp.htm
2. You will find a file called GWTApp.dll in this download. Copy this file over the top of the existing version you should find in your GroupWise application directory (probably “C:NovellGroupWise”)
3. Restart GroupWise and try again.
Novell updated this file, but didn’t change it’s version resource, meaning it may not have been updated when you last installed Formativ.
Please let me know how you proceed.