I've been trying to watch a disc from the simpsons season 7 using front row, and I stick it in, it loads up the FBI warnings, but then as soon as it gets to the "20th century fox" logo front row freezes, and the only way I can get out of it is to force shut down. I can't eject the disc, I can't command option esc, command and q doesn't work...why would this happen?