ADO.NET Entity Framework - Oracle with Entity Framework 6

I'm attempting to incorporate an ADO.NET Entity Data Model into my Oracle database-using ODP.NET solution, however I keep getting the following error:

"Your project references the latest version of Entity Framework; however, an Entity Framework database provider compatible with this version could not be found for your data connection. If you have already installed a compatible provider, ensure you have rebuilt your project before performing this action. Otherwise, exit this wizard, install a compatible provider, and rebuild your project before performing this action."

Additionally, the dialog states that Entity Framework 6.x is being used.

It's an ASP.NET MVC 5 web application, and I'm working with Visual Studio 2013. I've set up Windows x64 64-bit ODAC 12c Release 3 (12.1.0.2.1).