As the Windows 10 release window nears our company has been doing some testing involving Solidworks 2015 and the new OS (RTM Build). Everything seems to be working alright until I tried to enable the Add-In for Workgroup PDM. I have attached a picture of what Add-Ins are available within my installation of Solidworks Professional 2015 SP4.0. I am hoping someone has an explanation of what is going wrong and how it can be fixed. It should be noted that I have repaired installations and verified that Workgroup PDM is checked in my SW installation manager. I can access the PDM through SW Explorer just fine. Thanks.