ok, so i bought an app and didnt like the graphics, so i modded it (its the blocked app and i made it look like parking lot). however, im now occasionally getting "app cannot be opened" message just for that one app. so is it not possible to change the pngs inside one of those apps? or do i need to do something else? permissions or something? i was gonna release the mod, it makes it look like parkinglot and is much better than the quite nasty blocked graphics. but if i cant get this problem fixed then im stuffed. anybody know how to change the pngs and not have probs?