Hi! When it crashes does it show a callstack? If so can you post it here? Also are you on a Mac or PC?
PC
Here's the callstack :
Error
nx/game/actor.lua:76: setPos was given no arguments
Traceback
[C]: in function 'assert'
nx/game/actor.lua:76: in function 'setPos'
trijam/char-columns.lua:46: in function 'update'
nx/game/actor.lua:233: in function 'update'
nx/game/scene.lua:369: in function 'update'
main.lua:16: in function 'update'
[C]: in function 'xpcall'
OK, so the good news is that you should no longer hit that assert. The bad news is... I have no idea why that assert would fire. I've had other people run the windows version on their machines and they didn't run into this crash so I'm not totally sure what's going on here.
Should work now, i hope i hope i hope!