Summary of the problem Dupe Bug (EnderIO, Actually additions) Pack Version 1.8.0 What is the bug? You can get infinite EnderIO spawners. If you place one and connect it to power it will break by itself and will drop as item. Actually additions ranged collector will pick the item up but spawner will be placed in your inventory. Now there are two spawners, one in your inventory and antoher one in the ranged collector. EDIT: This happens on every item in the game! Mod & Version ActuallyAdditions-1.10.2-r105 EnderIO-1.10.2-3.1.183 Link to log file https://www.dropbox.com/s/refomx5hq8r1gab/fml-client-latest.log?dl=0 Is it repeatable? Yes 1. Place down ranged collector 2. Place down empty EnderIO spawner (No Mob) 3. Connect it to power Known Fix ??