Could not load file or assembly 'WebGrease, Version=1.5.1.25624, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies

Question

I have an MVC4 Web API project. While running the service project I am getting an error

Could not load file or assembly \'WebGrease, Version=1.5.1.25624,

Answer 1

I used "Install-Package Microsoft.AspNet.Web.Optimization" (current version is 1.1.3) for starup web-project, which was not selected in NuGet console by default.

But NuGet has created a new app.config file even though web.config is expected to be updated.

For me it worked to move WebGrease dependentAssembly element from app.config to web.config's ....