Drafting error

Hy, I'm trying to install Drafting and Workgroup Manager on a Workstation, when i try to open Workgroup Manager directly from Drafting by "File->Modules", it keeps to show the error below:

"Impossible to load Windchill Workgroup Manager integration, incorrect parameter"

I tried to dis-install and re-install both programs but the error is still here. What can i do to resolve?

In attachment a screen of the error.

Thank you very much.