Need help with glitches so i can play?

Ever since the 0.37+ update installed I cant even hardly play the game on anything but freeroam. All I want is to play RLS career overhaul but cannot anymore, so I tried vanilla career and cannot even get it to function anymore. Is there anyway someone can help me downgrade back to 0.36.4? Otherwise, I cannot even enjoy my game. The map editor now glitches on me constantly if it even opens and I cannot finish the 2 maps I was working on. I am in a state of distress over this. My disappointment is immeasurable. I get mostly LUA errors. I am just frustrated and I WANT TO PLAY.