Action star Vin Diesel has caused chaos on the set of his new movie BABYLON AD, leaving the director with a nervous breakdown, according to reports. Film maker Mathieu Kassovitz has struggled to work with the XXX star's "fiery temper" and attitude to the film, according to Britain's OK! magazine. A source tells OK!, "Diesel shows up late all the time. He's laughing because he gets paid overtime for his delays. They were shooting in Prague on sound stages and were finally kicked out by another film and had to shut down for two weeks because the director had a nervous breakdown."