Xplod cd player reads Err 99 and wont accept cd

I had the same problem.
i fix it by taking out the cd player and pulling the outer case off. when i looked inside and the (in technical terms) metal bracket that holds the white plastic disc (that i guess holds the cds) inside the cd player was bent down. i am assuming that cds were hitting this when i tried to insert them! i just bent it back up using a knife from the outside. i bent it up until the white disc looked level.
good luck