Wild ARMs XF not working.

My copy of Wild ARMs XF isn't working for some reason. The laser seems to hit something when it tries to read it:

http://www.gamespot.com/users/tjoeb123/video_player?id=J3xmkzX-5bIJuTfb

Have your tried cleaning the disc with a soft cloth? If not then try that. Also I remember I would have a similar problem were one of my games would not work. All i did was slap the left side of the psp on my hand kind of hard (no lie) and it worked.

that happened to me but it was on all my UMDs I had to return it to sony :?

Take some toilet paper and wet it very slightly. Then spin it around the disk so everything is alittle wet. Then take anouther bit of TP and make sure its dry.D o the same thing and dry off the wetness your disk should work now

Dont give up Wild arms is an amazing gmae

or you can just open the umd case, than clean it with a piece of cloth.

that is what i do.