Haha, nevermind, the problem was not with openFile but with .open in the rollouts. Because maxscript didn’t say where the error happened, I got confu…

because I have varibles written in the file such as: startFrame = 25 endFrame = 100 etc… that I want to be initialized when the script starts.

I do have a close fStream after every open i do. :shrug: still doesn’t work. It only works when I do a ctrl-E from the editor but not when I run. …