Okay I finally got it to work.
To get to the gag reel:
Access chapter 3 directly not through chapter menu, but by using the chapter skip buttons on your DVD. Once at chapter three pess stop, and then press search or however you skip to an inputted chapter, the press 3 (and press enter, play, or select). This method worked on my playstation 2, Toshiba, and Panasonic DVD players.