As per
mungomongol8's discovery, Cogmind crashes if you trigger a trap while your sound card is disabled. (This has been the case for years, but as one might expect, it's not too common to be playing Cogmind without an audio device so we've never heard of it until now
)
For anyone who needs to play without an audio device, the next release will handle this situation normally, but until then you can patch your .exe by overwriting it with
this version.
(This patch only works on Beta 2.1, so if not using that version yet, you'd have to update before applying it. Saves are compatible. Note that the only change this patch makes is with regard to the audio device checking, so if you are always playing with a sound card active (zero volume or mute settings don't matter), there's no need to patch!)