Unzipped Action Groups into the right folder, but they're not showing up

The files are present in the "actions" folder in my Mp3tag installation, but they're not appearing in the program itself when it's run. How can I make Mp3tag see them?

see this thread for possible storage places:
Also, see the program installation folder.

It worked!

Ah, I'd been extracting the files to "Program Files (x86)\Mp3tag", not "AppData\Roaming\Mp3tag". Funny that, it used to work all the time in the former directory.