One user, Bob, sent me email instructions for how he got PubMed2XL 2.0 working on his Apple computer.
I've uploaded a PDF of his email here.
While I can't verify any of this because I don't have a Mac, I'd love to know if it works for other Mac users. Anyone using these instructions accepts full responsibility for their actions, of course. That's goes without saying even though I just said it.
If it works for you and you want to leave a comment, please do. If you want to create your own tutorial or video tutorial, that would be great as well. Let me know.