it's working 100% for me ...
I have tried this one and cannot seem to get it working, and yes i put my script name in the execVM part.
["onLoad",_this,"RscDisplayInventory",'IGUI'] call compile preprocessfilelinenumbers "A3\ui_f\scripts\initDisplay.sqf"
["onLoad",_this,"RscDisplayInventory",'IGUI'] execVM "Yourscripthere.sqf"
it's working 100% for me ...
Got it to work\\ Remove thread