If you just use the code in the movie demo and use you file name/path does it work then? (I don’t know what this display.fill() thing is and whether it could cause a problem for you)
Also, there are 3 different movie stimulus options, each using a different library for loading movies. You’re currently using MovieStim2 but you could try MovieStim and Moviestim3 with no other changes to your code to test them instead.