I need some help managing add-ons using GPOs.  I've been reading some threads but I still have not been able to figure out the problem.  The OS i'm working with is Windows Server 2008 R2.  The servers are setup with Citrix 6.5, the profiles on the servers are deleted when users log off.  Once the users log back on and launch an application two add-on pop-ups come up.  I need to be able have the user logon with out the add-on pop-ups coming up because it causes problems for the users.  I have already added the CLSIDs to a GPO but the pop-ups are still coming up.  What am i missing, or what is the best way to fix this issue?  Any help would be greatly appreciated. 

-Hector