There is a painful div/0 bug I introduced by adding new dna commands, I was trying to track it down, but had little luck. I'll have another go at it next weekend.
It is really bothering me because I put integrity checks on all new commands I added.
addstore
substore
multstore
divstore
ceilstore
floorstore
rndstore
sgnstore
absstore
sqrstore
negstore
anglecmp
unpow
depow
sin (multiplied by 32000)
cos