Could Not Load Assembly .NET 4.0

Question

whenever I build my web solution I get this error :

Could not load file or assembly \'dotless.Core, Version=0.0.0.0, Culture=neutral, PublicKeyToken=96b446c9e63         


        

Answer 1

I deleted temporary asp.net files in :

C:\users\username\AppData\Local\Temp\Temporary ASP.NET Files\

And it worked.