I updated to VS 2017 yesterday morning and ever since then I have had a weird error that I cannot get rid of.
I can remove and readd all of the support libraries, and the problem looks like it goes away, despite no files changing. But when I reload the solution, all of the warnings come back. It is every support library, and no other packages have a problem.
I have tried running "Update-Package -reinstall" from the Package Manager Console but it provides the same results as doing it manually.
I am using support library versions 25.1.1 with the latest JDK (pointing to the 64bit folder) and the latest SDK. I am on the latest stable release of Xamarin (the one that came with VS 2017). I have tried opening my solutions in VS 2015 but I experience the same thing now. So I am not completely sure that VS was the problem.
The strangest thing is that these warnings are lies. My projects still build and deploy, and everything works fine. MOST of the libraries are picked up by intellisense as well so the code looks ok. There are some libraries that intellisense doesn't work for, but these change every time I restart VS. But the apps build and deploy every time.
Does anyone have any ideas what it might be?