CTGP Crashing on Regular Track Time Trials


4DR Swag Bucks
Sorry if this is is the wrong place to ask for help, but this is quite annoying and I can't figure out how to fix it.
Basically, whenever I finish a time trials on regular tracks on my SD save file, the game will finish when it tries to show the leaderboard. Also, if I use riivolution to load this save file then the time in the bottom right of the track selection menu shows 99:99:999 or 0:00:000 on some tracks and they will appear on the leaderboards as ghosts with mario standard kart set by ?. Does anybody know how to fix this?
(If it matters, in my MyStuff folder I only have brstms)

Thanks to anyone who tries to help!