Attack From Mars v1.6 has been posted at http://www.descent2.com/dorsola/files/vpt_afm_16.zip - grab it here until AJ has it posted on his site. =)
This version brings the script in line with WPC.VBS v1.0 and eliminates the script errors you guys were experiencing. Also, the AutoPlunger is now an actual AutoPlunger for more accurate simulation. :)
And, the machine has been made more complete with the various kicker samples that have been missing in previous versions. We should be in great shape now.