I am getting this error when trying to launch SQL Server Management Studio 2014.
Package VsDebugPresentationPackage did not load correctly.
And in error log:
SetSite failed for package [VsDebugPresentationPackage, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]
Any ideas?
If you run the SSMS with /Log you would be able to find an xml file named "ActivityLog.xml" here: "C:\Users\\AppData\Roaming\Microsoft\AppEnv\10.0"
Going through that file you will find a line which is saying config files is not having the root element. If so, simply remove any sub folder of "C:\Users\\AppData\Local\Microsoft_Corporation". Then run SSMS with admin privilege and bingo...
This little solution took 1 day of my sprint...