"Unknown keyword in config file"

I've got a problem with the Knoppix 5.1 CD-Rom.
When I boot from the CD on my laptop (Acer TravelMate 2350), everything goes nice, expept frm the fact that the welcome picture is all messed up.
another problem is that beneight the line that says "Use F2 and F3 for cheatcodes" there is a line that says: "Unknown keyword in config file" after that it just says: "boot:".

F2 and F3 are not working and it doesn't responds to any cheatcodes, if I just press Enter it will boot up just fine, but I can't use cheatcodes.

The biggest reason I pitty this bug is that I can't use the beautiful Beryl desktop now. So A method to use Beryl without cheatcodes would help me too.

The cd only has this fauld in my laptop, on other computers is runs fine and cdtest says there's nothing wrong.

someone has an idea?