error message?

i keep getting an error message when trying to post on the megamillions thread

this thread: MegaMillions - For real: If I win, what the hell is my first step?

and it says:

Error Page

An error has occurred; please try again shortly.

it only happens when i try to post this link:
http://www.cbsnews.com/

8301-201_162-57407093/mega-millions-jackpot-swells-to-$640-million/

(i had to move half the link down or i got the same error message here)

Yeah it was screwing up on the link. Haven't looked into in detail, but it's probably the $ sign.