Okay, I installed the Artistheat poses and tried them out. Apparently, the missing files are not supplied with the package. They might have existed in some antediluvian version of Antonia (you know, more than a year old or so), but  so far I haven't been able to find any traces. One way to make those poses work is to edit the pz2 files and remove all lines starting with 'readScript'. Another would, supposedly, be to provide some dummy files that they could read.

-- I'm not mad at you, just Westphalian.