I built an experiment on Mac OS 10.14.1 with PsychoPy 1.85.4 and it runs well.
When I try to run it on the research assistant’s PC, it did work until I added audio files (.aiff). Now the experiment fails to start. PsychoPy only displays the background color of the image of the first routine.
Could it be because of the hardware? For example, I have 16 GB of RAM and he has 8 GB.