Awesome glad it worked this time!!
Yeah, Apple computers use a different file structure, and create a bunch of hidden files that are needed for the operating system and finder to work. Unfortunately they make their way on any removable media as well, even though it's not required there, and certainly windows doesn't need them. This is likely what tripped both you and I up with our map update.
https://www.publicspace.net/ABetterF...ibleFiles.html
At least now we know how to do it correctly, I bought one of those lifetime fsc licenses, so I kept my key and pc setup for future updates.