It's not surprising considering the poor reviews it received. The X-Files was great as a television series, but sometimes series don't transfer well to the big screen. Plus, lousy timing with it being released a week after TDK. It's just been too long.
In other related news, mswood, Skinner will be playing Mary's father on Supernatural in the flashback episode. Thumbs up from me. Kim Manners being one of our directors really pays off with his connections.