Costume System instalation

Hello epvp,
I tried to implement a costume system (invoice version) on my server+client but when i enter in game i can't see the item descriptions.. In syserr client i get this

Code:

0823 17:00:42751 ::   File "ui.py", line 1442, in OnOverInItem

0823 17:00:42751 ::   File "ui.py", line 87, in __call__

0823 17:00:42751 ::   File "ui.py", line 78, in __call__

0823 17:00:42751 ::   File "uiInventory.py", line 725, in OverInItem

0823 17:00:42752 ::   File "uiInventory.py", line 707, in ShowToolTip

0823 17:00:42752 ::   File "uiToolTip.py", line 533, in SetInventoryItem

0823 17:00:42752 ::   File "uiToolTip.py", line 883, in AddItemData

0823 17:00:42752 :: AttributeError
0823 17:00:42752 :: : 
0823 17:00:42752 :: 'module' object has no attribute 'ENABLE_COSTUME_SYSTEM'
0823 17:00:42753 ::

Some guys said that it's from launcher... Can you let me a solution or a tutorial how to implement then from 0?
Thanks