Just rename GTMENU.psflib as gtmenu.psflib if needed then.
I'm actually just going through the .minipsf files to add a "title=" tag, and while I'm in there I'm just changing GTMENU to lowercase.

There's a few I didn't identify, what I have so far is
$ grep -a "title" *
gt-04.minipsf:title ...

I've been working on that game among other ones last month and have a WIP Minipsf set for both the Japanese and international versions.


Cool !

PS : as extracted, the gtj*.psf files may not play because they refer to "_lib=gtmenu.psflib" , which doesn't match on case-sensitive systems with the ...