Error renaming ASP.NET MVC project

Question

I have copied a previous project and renamed it. Once I had successfully renamed all the name spaces and it build correctly. I got the following error when I ran the application

Answer 1

I was having the same problem after renaming the assembly of the solution.

I solved by making sure the OwinStartupAttritbute is refering to my new assembly name.

Next is to delete the old assembly found in bin folder.