full reinstall debug error

Ok, had to wipe my system and reinstall everything.
Windows 10 pro. visual studios 2017 Enterprise. All updates and sdk’s needed.
Monogame 3.5.
Code compiles, then returns a stack over flow error on debug.
Issue seems to be related to strings, we had this problem last year and fixed it but cannot remember how we fixed it.

monogame 3.6 but on compiling always requires sdl2.dll even though it is in system32 folder. But this is not a sdl program we are making.

thanks all

3.6 uses SDL as a backend for platform abstraction on cross-platform desktop projects.

Hi all
Does any one else a suggestion?