During filming, as Klaus Kinski became more and more difficult to deal with, director David Schmoeller noticed Kinski had a crush on one of the young female actresses (Tane McClure, daughter of Doug McClure) and would always be polite and on his best behavior while she was on the set. Towards the end of filming, Schmoeller asked McClure to remain on the set as often as possible so Kinski would be more cooperative and the film could wrap sooner.
According to David Schmoeller, Kinski started six fistfights during the first three days of filming.
David Schmoeller had a lot of trouble directing Klaus Kinski, who refused to listen to basic commands such as "action" and "cut".
David Schmoeller later made a short film about his problems with Klaus Kinski called Please Kill Mr. Kinski (1999).
Kinski was apparently very unhappy with the wardrobe that had been selected for his character, buying a whole new set of clothes and charging the costs to the film production. Afterwards, he kept the clothes for himself.