battlefield 3 , premium and endgame 2 MAPS NOT WORKING SAYS DISK CANNOT BE READ

hi i just installed bf3 endgame add on and tried to play all four new maps only 2 work and the other two that dont when loading say disk cannot be read. does it need to really read the disk and is so why do two maps work and not the other two yet all other map content works fine every other map loads fine so why the messege disk cannot be read. looked at disk itz fine can somebody help as i been waiting over 6months for this last game add on and spent over 150 on this game alone i have reinstalled bf3 again and endgame and

restarted console again and again im getting fustrated with it now need to turn to other form of help tomneonx