batman arkham city ra's al ghul problem

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#1 Posted by mitulpatel888 (25 posts) -
i got a problem in the Ras'Al'Ghul's fight: as I beat him, he takes Talia in hostage. Batman is supposed to take a new gadget from himself. Nothing happens, he keeps the sword in his hand. I've redden on forums that I can change the resolution into 640x480 to resolve this bug, but I can't find where I can change this. Please, can you help me?..........please.