I dont get a lua error message box or a chance to report the error.... game display simply starts to flicker on and off very fast and the game locks up.
Had a look in the log file and seems this may be the error message in question:
Map z-callback error: Z 19: /engine/Map.lua
There are lots of these to see in the log file.
Log file is attached, class is rogue, playing in ascii mode, all shaders enabled apart from volumetric, AMD graphics, windows 10, latest version of everything from steam. Also i have taken a copy of my save directory just in case that is needed as well, though that is too big to upload here.
All being well I will get out this map and not see the error again.
....side note for our Dark Lord: EoR is absolutely amazing!