Please a little help python error. THANKS

Hi i have this erro when i press game option button:
OptionDialog.__Load_BindObject - exceptions.KeyError:salestext_on_button

And another error:

0705 02:43:40666 :: File "ui.py", line 1447, in OnOverInItem

0705 02:43:40666 :: File "ui.py", line 87, in __call__

0705 02:43:40666 :: File "ui.py", line 78, in __call__

0705 02:43:40667 :: File "uiInventory.py", line 89, in OverInItem

0705 02:43:40667 :: File "uiToolTip.py", line 901, in AddItemData

0705 02:43:40667 :: TypeError
0705 02:43:40667 :: :
0705 02:43:40667 :: unsubscriptable object
0705 02:43:40667 ::

Thanks a lot