Thanks for your reply and we are working on the solution for your ACADM 2011. But I am sorry that the previous message is for the other user Gianluca.Larocca
We have the same problem, but not with all the client installations.
Our configuration is
Vault WorkGroup 2012 sp1
AddInn for Vault & AcadMech2011
Have you tried the following Hotfix?
If the above doesn't help
> Can you please let me know the list of all the CAD applications (Autodesk) you have installed in your system and their versions?
Start with some of our most frequented solutions or visit the Installation and Licensing Forum to get help installing your software.