i've got a problem playing ffxii

i bought 2 types of disc, 1st one can play until phon coast(the beach), then the game hangs, screen becomes black and music on. i tried testing at 2 ps2 shops (they use the small ps2) they also have the same problem.

2nd type i tried at the shop can get past that beach place but i try playing at home it wouldnt load the title screen.

my ps2 is the large one, hope anyone can help me out with this problem.

my memory card has a problem browsing the saved game files due to winning eleven 11.

anyone knows any shops in kl or klang valley that can help solve the problem?