Yep, it's a pain. Apple still don't support Fuji Compressed raw files 18 months after the X-Pro 2 came out. Yes, you can use uncompressed raw but you an't convert after the fact and compressed raw is half the size.
Apple and Microsoft seem to be forgetting photographers in their roadmaps and support.
Just installed the trial and it works!! For $10 it seems the solution.
I had a similar problem with video on the new computer. I had to update my Codecs for video to solve it. Sounds like you found a good solution though. I am surprised that Photoshop didn't solve the issue though. My photos were no problem after my Photoshop was installed.