Could not load file or assembly 'EntityFramework, Version=6.0.0.0,

Install-package entityframework - version 6.1.3

EntityFramework error: The provider did not return a ProviderManifest instance

Download http://www.microsoft.com/en-us/download/details.aspx?id=40762 and update Nuget EF to 6.1.3 and everithing will work just fine.