Serverlog help!

[coconuT (DayZ) 1]

What is this?

17:06:26 Error in expression <stInventory",_inventory];

if (_objectID == "0") then {

_key = format["CHILD:309:>

17:06:26 Error position: <== "0") then {

_key = format["CHILD:309:>

17:06:26 Error Generic error in expression

17:06:26 File z\addons\dayz_server\compile\server_updateObject.sqf, line 31

Need Help first time i see this!

[kaindebuddy 6]

i believe it is a tent that failed to save because of bad position.

but not 100%