was any entity in the data dump from mods registers incorrectly?
if so you need to make it clearer to mod makers about the better mob id system
railcraft
animalbikes
Reika
enderio
flansmod
headcrumbs
peripheralsplusplus
toomuchtnt
fyresmodjam(this one is the you will die mod)
thermalfoundation
noppes.npcs
because that's all the mods i found not using the good system
already trying to talk to some the mod makers about the problem