@tig said:

It's trying to make/use a file called 'Fredo6Trace.txt' in the 'plugins' folder.
It's failing with a 'Permission denied' error.
It's not in the folder contents you show.
The script ought to make it automatically.
Therefore I suspect that you must have the 'security permissions' set to be oddly limited for the 'plugins' folder.
I'm not sure how you change this on a MAC, but on a PC it's relatively straightforward to change them to 'FULL', so I'd expect on a MAC it'll be easy too.
This change to 'FULL' permissions will allow you to add/remove files/folders etc and for scripts to write files into that folder too.
Also note that your Materials, Components and Styles folders ought to have the same permissions, as from time to time you will want to add files readily to these too...

Thanks so much for the tip, had the same problem, solved now