Generation of designer file failed: Could not load file or assembly

Question

I have an ASP.NET web application project which references another project called ModusCore (or Modus.Core). We\'ve had a variety of controls that use ModusCore up until now wi

Answer 1

Another solution I have found to be effective in Visual Studio 2015 is to close VS and then clear out the following directories:

• %UserProfile%\AppData\Local\Temp\Temporary ASP.NET Files\
• %UserProfile%\AppData\Local\Microsoft\VisualStudio\14.0\ProjectAssemblies\

Open your solution again and select Build->Clean Solution.

Now go to your ASPX page, and then select Project->Convert To Web Application