Dang, and this is in the latest version (2.0b)? I've been trying to squash that crash bug for quite some time now. I have no clue why it also only happens with Style 3: every other style seems just fine compared to it.
I've been suspecting it's because players change style right as the bullets try to delete themselves: I changed it so that they try to despawn instead, but it seems it doesn't matter what the order is: if it's sent as they're already being deleted through the other method, the game thinks something's wrong and just goes kaput. And my theory should technically also apply to other Styles, but the game insists on it only happening with Style 3...
I guess I'll have to change the way the bullet delete themselves entirely: separately from RPGM's movement route system.
Thanks for playing by the way!