Battletoads & Double Dragon for NES: strange crash

[Ansatsuken]

This particular game is getting a strange freeze upon entering area 5-2. Moreover, this seemingly occurs only with the good dump - CRC32 CEB65B06 - with VirtuaNES, the only emulator that runs every other game I tested without crashing, unlike Nestopia, AND supports add-ons such as Datach, unlike FCEUX. Even odder is the fact that after passing this particular instant using a hacked dump (thanks to the save states), the game ran normally without any other problem.
You guys have any idea about what could be causing this?

EDIT: I decided to post this here because it's not specifically about hacking.