It could be overlapping.
To change the x/y coordinates, go to *bt_ep8_2_def
But overlapping shouldn't freeze the game. It'd probably be something like an infinite loop causing it to freeze, so check for those. Also, does it freeze when you open the tips (and on which side?), or when you click on the new character? That should narrow down the places in the code you'll need to look to find the problem.