Just to add my experience to this post It has been extremely frustration to deal with this issue. I had to spend hours searching for information on this issue. I did not know there was a new Mac version until I finally found this forum.
Roots Magic kept freezing and I kept having to use force quit to shut down. Then the program would not find any of my data to open and continued to keep freezing. That's when I started looking for answers.
I uninstalled Roots Magic although the directions provided in this post did not work to uninstall it. I uninstalled by going to Applications and dragging the icon to the trash. It was easy but I had already tried the method in this post provided by Roots Magic and it did nothing. I then installed the Mac version. (When I did this it never asked for my product key....)
There was no change in the program's response (lack of response actually) except that it found more files when I tried to search for files to open. (It came up with a list of at least 151 files before I quit the search as I wasn't sure if any of those files were correct to open.)
Roots Magic still 'froze' and I had to force quit. I had to open and force close the program numerous times before it finally responded and I was able to use the menu bar. I was then able to use the Restore feature and select my backup file. It has finally opened all my data. I have not tried to use it to enter anything nor have I tried to close it yet.
Hoping this is the end of the issue but I have no confidence that it will be.