"Star Wars" star Hayden Christensen has not seen his movie "Factory Girl" because he hated making it.

Christensen had to portray Bob Dylan in the film and prepared for the role by learning how to play the guitar and write songs.

However, Dylan wrecked those plans by threatening to take legal action and Christensen had to re-dub his lines and ended up not sounding like Dylan at all, reports contactmusic.com.

Christensen said: "I signed up to play Bob Dylan and it was to be a biopic, a true story. I learned how to at least pretend to play the guitar and did a scene where I wrote a song and performed it.

"But later, because he threatened to sue, I had to go in and re-dub my whole performance and change the way my character talked because I had been doing the Dylan voice. I don't know what is onscreen in the end because I never saw it, but I do know it's very different from what I did, and I was sort of p****d with the people who made the movie."