Attempt to reverse pickpocket an item into another character's inventory. In this case a container was not selected, and I was not "looking" at the other player. Just treated it exactly like how it used to operate.
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ERROR in
action number 1
of Async Event: Networking
for object NetworkHandler:
Creating instance for non-existing object: -1
at gml_Script_SpawnNewItem
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gml_Script_SpawnNewItem (line -1)
gml_Script_SpawnRefItem
gml_Script_CreateScroungeMotes
gml_Script_PacketSwitcher
gml_Script_ReceiveNetworkMessage
gml_Object_NetworkHandler_Other_68