Update********Just wanted to let anybody know what solved the OpenGl error with medium is just unplugging the rift from the back of the PC then plug it back up. and then start the game up. That fixed it for me atleast
If you use Afterburner and have it set to draw the window overlay it'll crash any modern OpenGL app (Medium and Quill both use OpenGL 4.x). Afterburner intercepts everything and inserts its own calls and it's using old, now-invalid OpenGL calls. 😞