EDIT–SOLVED
Some variation of Murphy’s Law, no doubt–Google something for an hour, find nothing, post to a forum, and then the answer appears on your next click–
In the ZBrush program files directory, in the troubleshooting subdirectory, there’s a force GoZ installer program. Run it and rejoice.
I’ve been using Zbrush (2022, this applies to the last two updates, completely current) with Houdini, and now I want to do it with Maya. The problem is that Houdini is the only program showing up in GoZ’s program list. Force reinsall only gives the option to reinstall Houdini (no other program, including C4D, which is also on my machine, or Photoshop, which I think used to be an option). Same with update paths. I’ve reinstalled/updated with the same result. How can I get GoZ to see any other program? (“Update application paths” is completely greyed out.)
Forever ago there used to be a way to manually install it, but any forum/web pages I’ve found to that effect are from 2016 or earlier.
Addendum–If I click the “R” on the tool panel, I get an “unable to open file” error that says it can’t open “C:\Users\Public/Pixologic/GoZBrush/Scripts/GoZ_ResetTargetApp”
Forgot to mention, running Windows 10 and Maya 2022 (but it also wouldn’t find Maya 2020, which is also installed).