Animate dead hit dice?

Animate dead can produce a number of skeletons or zombies based on caster level:

ACKS core book: caster level ×2 hit dice.
Player’s companion: caster level in hit dice.

I generally assume that the published source is the correct one, but would like to make sure.

ACKS core book. That's an ERROR in the Player's Companion. Thanks for catching it!