Thanna20's post in autoloot was marked as the answer
mob.hpp
find
//This is the distance at which @autoloot works,
//if the item drops farther from the player than this,
//it will not be autolooted. [Skotlex]
//Note: The range is unlimited unless this define is set.
//#define AUTOLOOT_DISTANCE AREA_SIZE
just uncomment it and then recomplie
//This is the distance at which @autoloot works,
//if the item drops farther from the player than this,
//it will not be autolooted. [Skotlex]
//Note: The range is unlimited unless this define is set.
#define AUTOLOOT_DISTANCE AREA_SIZE
try to find the novice sprite on your custom grf and delete it, by default your client will use the novice sprite on your data.grf and check if the problem still occur.