Was minding my own business, tried scrapping unidentified arrowheads ( no material, just "arrowhead"), which crashed the game whenever i attempted to open my inventory, this also applies with the Equipment panel, since that also opens the inventory.

Reproduction Steps:

1. Gain unmarked arrowheads
2.  Scrap unmarked arrowheads
3. Game crashes, pressing I or G produces the same result.

Error Message:
___________________________________________
############################################################################################
ERROR in
action number 1
of Alarm Event for alarm 0
for object NewMaterialItem:

string_length argument 1 incorrect type (ptr) expecting a String (YYGS)
at gml_Object_NewMaterialItem_Alarm_0
############################################################################################
gml_Object_NewMaterialItem_Alarm_0 (line -1)
gml_Script_SpawnNewItem (line -1)
gml_Script_SpawnRefItem
gml_Script_CreateInventoryItem
gml_Script_CompleteInventoryRequest
gml_Script_PacketSwitcher
gml_Script_ReceiveNetworkMessage
gml_Object_NetworkHandler_Other_68

images: