While critics praised the film, it underwhelmed at the box office, earning $391 million worldwide. Now, with another Superman film in the works — Zack Snyder’s “Superman: Man of Steel,” which stars Henry Cavill in the title role — “Superman Returns” director-producer Bryan Singer says he made some mistakes with his own film. “I think that ‘Superman Returns’ was a bit nostalgic and romantic, and I don’t think that was what people were expecting, especially in the summer,” Singer said. “What I had noticed is that there weren’t a lot of women lining up to see a comic book movie, but they were going to line up to see ‘The Devil Wears Prada,’ which may have been something I wanted to address. But when you’re making a movie, you’re not thinking about that stuff, you’re thinking, ‘Wow, I want to make a romantic movie that harkens back to the Richard Donner movie that I loved so much.’ And that’s what I did.”