Whenever I use the movie script to record, it says it saved the movie to the directory, but when I go there there is nothing else than screenshots!

you can use programs like virtualdub to make the video with the screenshot easily.

I have already answered this kind of question in the suggestions thread. Ill try to find it out.

EDIT:
Go Here: http://forum.toribash.com/showthread.php?t=12261 it may say its for 2.7 but its still working in 3.91.