Missing money causes Gyllenhaal and Biel to walk off movie

Jake Gyllenhaal and Jessica Biel walked off the set of director David O' Russell's new movie 'Nailed' on Friday, after producers failed to show they had enough money to pay its cast.

The Screen Actor's Guild (SAG) will keep all castmembers from the movie until the production company shows there is enough money set aside in a union-mandated account.

An on-set source tells the New York Times production on the movie is expected to resume this week.

It's not the first scandal to strike set of the movie, which was co-written by Al Gore's daughter Kristin - veteran James Caan quit his cameo role last month after a bust-up with Russell.