[1.1.6.0] Fatal error encountered with obj_mega_crate in Baozhu Road map

[DeriveEpoch]

---

############################################################################################
FATAL ERROR in
action number 1
of Step Event0
for object obj_mega_crate:

Push :: Execution Error - Variable Index [1171,160] out of range [26283,153] - 0.(100002,37472160)
at gml_Object_obj_mega_crate_Step_0
############################################################################################

stack frame is
gml_Object_obj_mega_crate_Step_0 (line -1)

[whitelilydragon]

Unfortunately, because of how arrays work in Game Maker, it doesn't produce useful errors wherever arrays are involved. I will need to know what happened prior to the crash. (For instance, which slope tile did the crate slide over?)