The other week I ran an update through the extension manager to update a particular extension. When I restarted Visual Studio I was greeted with an error saying to check the ActivityLog.xml file. Looking in that file I saw it was trying to load an extension that didn't exist any more, so I removed it from the registry using the GUID as a reference.
It seems thought I am still getting oddities with extensions. Whenever I install a new extension the ActivityLog shows it has been loaded without error yet they never show in Visual Studio. At one point I even had an old extension menu option in Tools -> Options
that simply gave an exception when clicking it.
I am also getting errors when opening a solution file, like so:
I have tried to repair and reinstall Visual Studio 2012, but to no eval. Has anyone else encountered this?
Edit It appears that when I got another user to sign onto my machine and open Visual Studio for the first time it all worked for him. He was able to install extensions and see them instantly, so maybe something in my user profile is corrupted - any ideas on this?