I have a new ASP.net 5 dnx class library I am using for entity framework. I need to target EF 6 because some features I need are not in EF 7.
First the EF tools (li
It's because ASP.NET Core introduced a new project type/configuration system (see package.config vs project.json) and the old EF tools don't know how to work with the newer system (project.json). It would probably be easiest to create a new project and port your code into it if you want to go back to EF6.
Interestingly (well, disappointingly actually) they're backtracking on project.json see: http://xoofx.com/blog/2016/05/11/goodbye-project-json/