Could not load file or assembly System, Version=2.0.5.0 in .NET 4 MVC 4 application

Question

Been searching for ages, can\'t find anything helpful. Here is the exception I\'m getting:

Could not load file or assembly \'System, Version=2.0.5.0, Culture         


        

Answer 1

Starting from a machine configuration that only had VS2017 and Silverlight 5 SDK on it, I installed VS2015 on top of that. This is when I started getting the System.Core and System.Windows problems.

When I uninstalled VS2015 and re-installed Silverlight 5 SDK, these problems went away.