Maybe it's just a problem with my laptop then, but here is the error it gives me:
___________________________________________
############################################################################################
ERROR in
action number 1
of Other Event: Room Start
for object objCont:
File is not opened for reading.
at gml_Script_stage_load
############################################################################################
--------------------------------------------------------------------------------------------
stack frame is
gml_Script_stage_load (line -1)
gml_Object_objCont_Other_4