The monster clockwork leviathan (bestiary 3) has an error in it's statblock, specifically it misses it's +2 dodge bonus which results in 2 less AC points. Yes i know that this +2 dodge bonus doesn't come from a special ability but all clockwork monsters seem to have it (although it isn't listed in the general clockwork rules).
The statblock also has some other minor errors (like the missing specifics for swallow hole and breath weapon) but i am guessing that these are missing because bestiary 3 is still in beta.
Win 7 64bit, PCGen 6.03.02 alpha
I am sorry, i misclicked and i accidentally reopened it.