NuGet.exe pack gives access to the path is denied

Question

When I try to pack my MVC project (NuGet.exe pack) I get:

NuGet.exe : Access to the path \'...\' is denied.

This happens to be

Answer 1

My collegue just got this error, during all "worked on my machine". After some research I found out that the *.nuspec file for some reason wasn't added to the version control.