My movie stops playing after certain clips

I'm editing a movie and for some reason, there are one or two clips that make the movie stop playing entirely. I tried saving the movie file to see if it only happens in the storyboard, but it appears that the movie just ends after the bad clip. All my video clip files are supported. Also, I have tried removing the clip and the movie plays fine. When I add it back in however, It automatically plays the clip at double speed. I tried looking at the video effects, but it says it doesn't have one on it. The clip I have before it is set to double speed, so I'm not sure if that's why? Anyways, any help would be much appreciated.