Preloader causing typeError #1009

I have been coding my flash movie/website and everything was working fine until I added a preloader on frame one, moved frame “home” over one frame to frame2. PaulJamesWilliams is the name of the file that I am editing. what do I do?

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at PaulJamesWilliams_fla::MainTimeline/frame2()
at flash.display::MovieClip/nextFrame()
at PaulJamesWilliams_fla::MainTimeline/updatePreloader()

I cam post whatever code I need to…