Player: V10.13.16:3256064
In any zombie level, whenever I open up a level and the lemmings start exiting the hatch, I get this error (displayed in the picture below). Afterwards, the player crashes, and even if I click "OK", the error refuses to go.
I've fixed the crash already. However, a bug still remains where, if any zombies are going to spawn from hatches, they are counted as alive (in the "alive lemmings" count) until they actually do spawn.
Fixed that too now.