The 'ProviderPackage' package did not load correctly

Question

I installed Visual Studio 2012 and at a later date Update 2. After installing Update 2, when I load any project, I get the following error:

Answer 1

I just had a similar error (on Windows 7. I installed Visual Studio 2015 Professional and then after that, several "...package did not load correctly" messages started showing up when I ran Visual Studio 2012).

What fixed my issue was to repair "Microsoft Studio Tools for Applications 2012".

1. Run "appwiz.cpl" (Control Panel → Programs → Uninstall a program
2. Right-click on "Microsoft Studio Tools for Applications 2012. Select "Change", then click "Repair".

After this, I can open up Visual Studio 2012 without those error messages.