Encountered during the ship building phase of the tutorial, step 17, when I hit 'Z' to undo a delete. After this error, I elected top 'ignore and continue'. I was unable to use 'Z' to undo a placement or deletion, but the error didn't popup again.
Also posted on Steam Forums:
http://steamcommunity.com/app/292330/discussions/2/364040166678282069/___________________________________________
ERROR in
action number 11
of Step Event
for object obi_controller:
Error in code at line 204:
if new_object.info[0] != room
^
at position 34: Unknown variable info