Undertale: EZ Debug Mode

when i start it my Undertale Keeps saying Code error's and keeps Crashing????

the 1.001 version crashes ;(

############################################################################################
FATAL ERROR in
action number 1
of PreCreate Event
for object obj_screen:

trying to index a variable which is not an array
at gml_Script_scr_murderlv
############################################################################################
can u plz help

Just downloaded, and put in a modded UNDERTALE.EXE folder(via copy paste)but what are the debug controls

This is for version 1.001, right?