[HolyShit]

Код:

public OnPlayerPickUpStreamPickup(playerid,pickupid)
{
	return 1  <<=== you forgot to add tag  ;
}

And how to fix this warning ?

Код:

(44970) : warning 235: public function lacks forward declaration (symbol "OnPlayerPickUpStreamPickup")

Код:

\pawno\include\erpPickupStreamer.inc(131) : warning 211: possibly unintended assignment