Coder view not opening on PsychoPy v1.90.2

Strangely one participant (out of many) who has downloaded my experiment in PsychoPy v1.90.2, can’t seem to open the coder view. He’s running it on macOS Sierra Version 10.12.6. I run this OS myself and it works fine on my machine…

I had him right click the .py files (which have worked for all of the other participants) and select ‘open with PsychoPy’: PsychoPy opened but without any windows open.

I had him open a new project in the builder view, and this was fine. I then had him attempt to open up coder view and nothing happened. I then had him press the script compiler and nothing happened.

Any ideas as to what might be going on?