Installing Visual Studio 2015 Update 1 give me lots of : “package did not load correctly”

Question

I installed VS2015 with update 1 on Windows 7 Entreprise English over Visual Studio 2015. The setup result was some error(s). I Restarted my machine and run the setup again. The

Answer 1

Close Visual Studio Delete following folder C:\Users\%username%\AppData\Local\Microsoft\VisualStudio\xx.x\ComponentModelCache and file C:\Users\%username%\AppData\Roaming\Microsoft\VisualStudio\xx.x\ActivityLog.xml

Restart Visual Studio