Try deleting the OPL configs from the memcard and restarting OPL. Back them up if you can 1st.
I went back to it and apparently my game didn't have a file extension at all. I reconverted the game (The app crashes if I change the target name in the save box, I have to edit the string in the main...
Retried RR US and it now works (Bought a new audio receiver and that must have been the issue) also converted MvC2 with that app and it doesn't appear on the game list.
I am having a decent amount of issues, The biggest one is my CD games are not displaying. They are Bin/Cue in the /CD folder in the root and none of them appear in the game list.
Also most games have issues, idk MD5 or product codes atm but I can research them.
Rumble Roses: No sound
Devil May...