mscorlib version conflict during build
I have been able to fix this issue by deleting my ".suo" file of my solution and then re-opening the solution. I then rebuild the solution and the issue is gone.
The ".suo" file is within the ".vs" folder which is what I usually delete.
Good luck!
I was able to fix this by issuing an update-package -reinstall command at the Package Manager Console.
BUT
Be careful, updating all the packages in your solution could cause other problems, make sure you can roll back to a good version if it goes wrong!
Having different versions of a Nuget package on different projects may cause this problem as well. Make sure that all your packages have the same version:
- (Within Visual Studio) Right click on the solution
- Click on Manage Nuget packages for Solution
- Click on the Consolidate tab
- For every package in the Consolidate tab, update the package to the same version for every project.