Hi all!
I have 3 DLLs, which I want to include in my project. They are in the Assets folder. When I first opened the project, I got an “assembly reference missing” error. I added the references in VS, and they are OK now. But only in VS, Unity still does not see them. Auto correct works in VS.
Make sure that the DLL work in .net framework 3.5 or below since Unity standard work with that. or you have manually set it to 4.5 or higher.