The dreaded "Trophies load will now quit" error in Assassin's Creed II (often misremembered as "Creed 2") on PS3 typically signals corrupted trophy data or a sync conflict with the PlayStation Network. It's frustrating but usually fixable without losing your campaign progress.
TROPHY folder on your HDD has a bad write.If using a disc, clean radially (center to edge) with microfiber + isopropyl alcohol. A read error during trophy write can trigger the quit.
Pro Tip: Earn a trophy in another game first. If that works, the issue is isolated to AC2's local data—making Fix #2 highly likely to succeed.