OK. Let me assure you, the game definitely works on 3.55CFW Kmeaw with Mulitman.
Short of knowing exactly what you've got and how you're trying to boot this game let me offer a few suggestions.
Firstly, is your game a direct rip off an original disc? If not, it's possibly a bad copy/dump.
If it's off a an original disc it may be a bad dump.
It could also be that you're trying to play off usb. When I log off this game the PS3 locks up if I have a usb hdd attached to the PS3 so I'd say install to internal.
Also it needs an update (2.10).
Delete all game data for the game before you try any remedy.
If all of the above don't work, you may have a hdd issue.
"We all agree your theory is crazy, but is it crazy enough?" - Neils Bohr