I don't know but it appears to me this movie was rushed into production. Seems like certain story elements were sacrificed for the sake of comedy. This film just tries too hard to be funny with some of the jokes missing the mark. The sophomoric humor really grew old after the first 20 minutes of the film. Whenever the writer(s) of a movie have to resort to penis jokes, you know they're grasping at comedic straws.

The first movie had a good Sci-Fi story interspersed with well timed moments of humor which I enjoyed. This film, in contrast, was laced with one lame joke after another that I've seen time and time again in other movies. I wasn't sure if I was watching a comedy trying to be a Sci-Fi film or vice versa.

I'm going to be reluctant to see the 3rd installment based on this experience.