Program Files (x86) in C: Microsoft Entity Framework Tools, Templates, and Extensions for the Common7 IDE in Microsoft Visual Studio 12.0 are included. EF6.Utility.CS.ttinclude
The following places are where the code generator is looking for the missing DLLs:
<#@ assembly name="%VS120COMNTOOLS%..\IDE\EntityFramework.dll" #> <#@ assembly name="%VS120COMNTOOLS%..\IDE\Microsoft.Data.Entity.Design.dll" #>
When I updated it from Advanced system properties after learning that the environment variable percent VS120COMNTOOLS percent is incompatible with the right installation path of Visual Studio, it worked.