WIN7 Ultimate
	I7 8GB mem
	MEP 15+
	Hi,
	  I cant seem to get my editted GOPRO non-HD video clips to end at the right spot.  The editting is no prob but the final video will play past the spot where it should end and play a black screen (possibly to the end of the original clip - I havent timed it).  I have read lots and tried all types of things but none have worked.  What am I missing to set the end point where it stops playing?  THanks. Cam.