bug. i am at the 2nd book and i'm at the stage where i caught a petty thief and am being offered 2 items from the shop owner as reward for my actions. unfortunately i get an error saying i cannot take anymore items because i don't have a backpack. one of the items the shop owner offers me is a backpack. i can't pick up the backpack being offered - when i try to, i get the same error about lacking a backpack.