This fixes the relatively nasty addin incompatibility issue that was floating around…
Direct link for Revit 2015:
http://download.autodesk.com/SWDLDDLM/Updates/RVT/2015/Autodesk_Collaboration_v7_for_Revit_2015.exe
Direct link for Revit 2016:
http://download.autodesk.com/SWDLDDLM/Updates/RVT/2016/Autodesk_Collaboration_v2_for_Revit_2016.exe
Known issues and Fixes:
http://download.autodesk.com/SWDLDDLM/Updates/RVT/2016/KnownIssuesA360Collaboration_v7_2015and_v2_2016.htm