EntityFramework error: The provider did not return a ProviderManifest instance

Question

My project is using ASP.NET MVC4, in C# with Visual Studio 2012 for Web Express.

When compiling my project, I have the following error:

The pr

Answer 1

1. go where you project is located(open Solution explorer. right click on solution and click on "Open Folder in file explorer"

2. open EDMX file with notepad and change ProviderManifestToken="2012" to ProviderManifestToken="2008". save it

3. build your solution