Using Robe of Harun al-Rashid causes game to crash.

[Poul]

When I use Robe of Harun al-Rashid (it gives +10% experience points) with one of my hero, the game crashes during battles (could be when hero levels up, but not sure of that).
Anyway, this item is bugged - I tried to use it in like 6 battles and game crashed every single time. Only solution is to not use this robe.