This installer bundles some other things in with it:
Download at:
http://download.autodesk.com/SWDLDDLM/Updates/RVT/2016/Autodesk_Collaboration_v6_for_Revit_2015.exe
What Revit Wants
This installer bundles some other things in with it:
Download at:
http://download.autodesk.com/SWDLDDLM/Updates/RVT/2016/Autodesk_Collaboration_v6_for_Revit_2015.exe
Weirdly, this update broke about 5 or 6 of my Revit addins, including Unifi and FormIt. I went through and disabled the ones that were throwing a warning at Revit startup, until I could start Revit without error.
This also broke my Dynamo addin for Revit, I had to uninstall Collaboration for Revit to get Dynamo to work again. Related issue:
https://github.com/DynamoDS/Dynamo/issues/4973