lua/pac3/core/client/part_pool.lua:666: Tried to use a NULL entity!

[Earu]

03:31:27 | Player [11][LeL] ERR: lua/pac3/core/client/part_pool.lua:666: Tried to use a NULL entity!
03:31:29 | stack traceback:
03:31:29 | [C]: in function '__newindex'
03:31:29 | lua/pac3/core/client/part_pool.lua:666: in function 'RegisterPartToCache'
03:31:29 | lua/pac3/core/client/parts/event.lua:3284: in function <lua/pac3/core/client/parts/event.lua:3270>
03:31:29 | lua/pac3/core/client/base_part.lua:485: in function 'CallRecursive'
03:31:29 | lua/pac3/core/client/base_part.lua:557: in function 'Deattach'
03:31:29 | lua/pac3/core/client/base_part.lua:538: in function 'Remove'
03:31:29 | lua/pac3/core/client/base_part.lua:516: in function 'RemoveChildren'
03:31:29 | lua/pac3/core/client/base_part.lua:544: in function 'Remove'
03:31:29 | lua/pac3/editor/client/wear.lua:151: in function 'HandleReceiveData'
03:31:29 | lua/pac3/editor/client/wear.lua:256: in function <lua/pac3/editor/client/wear.lua:239>
03:31:29 | [C]: in function 'xpcall'
03:31:29 | lua/autorun/netstream.lua:279: in function 'Remove'
03:31:29 | lua/autorun/netstream.lua:258: in function 'Read'
03:31:29 | lua/autorun/netstream.lua:131: in function 'Read'
03:31:29 | lua/autorun/netstream.lua:385: in function <lua/autorun/netstream.lua:384>
03:31:29 | [C]: in function 'xpcall'
03:31:29 | lua/includes/extensions/net.lua:110: in function <lua/includes/extensions/net.lua:76>