LiveCode 8.1.8, Mac OS 10.7.5 So, I imported a video in 3 formats into my stack: BubbleSort.mp4 BubbleSort.avi BubbleSort.mov and in a button popped this script: on mouseUp play videoClip "BubbleSort.mp4" end mouseUp [and variants thereof] and in all 3 cases all I got was the sound track: no film. Is it: 1. Me? 2. LiveCode 8.1.8? 3. My computer? Richmond.