I recently bought "Harry Potter and the Order of the phoneix" from EA through Apple. After validation and registration (I skipped), it seemed to initialize for a moment and then threw up something like, "Cannot located DVD-ROM. Please insert correct disk and restart application" I did and the same error again. My superdrive is good. I got it changed recently through Apple after the original one hosed. I tried some movie and s/w DVDs and it is fine. Anyone got any clue?