Thanks for spotting the 2266 unit Foodstamp (however this did not solve the crash).
Apparently the problem was caused by #newmonster 2999, changing it to #newmonster 2996 (or whatever lower number) seem to fix the crash. My bad, i had understood from the modding manual that 2999 was a valid number
Things are often strange around the edges in Dom3. Especially in modding. Going too close to the limit may cause crashes just the same as if you had exceeded it.