Sounds like you have a stray video or audio frame out at 14 minutes... you may not be able to see it as it may be too short. Try hitting the Page Down key, this will move the Current Time Indicator (CTI) along to the timeline to the beginning and end of each clip. Does it jump out to 14 minutes... if so zoom in and see if you can see anything on any of the tracks at this position.
Also, is the work area bar (WAB), the grey bar above the timeline, stretched out to 14mins, if there are no stray clips then maybe you have just dragged the WBA out to 14mins. If so just drag it back so that it just covers the video.
That got it Paul, thanks for your help. Stray was way too small to see.
After an editing session, before Export/Share, I always hit the "\" key (back slash) to zoom out the Timeline to fit the screen. This will show everything that is on the Timeline, including any "strays." These are fairly easy to get, due to what I think is a "quirk" in the way PE edits. It is not a Bug, but just a quirk. If you have Snap on, and move a Clip too "hard" against the preceeding Clip, say by one frame passed the Tail of that Clip, a frame (or two) will be lopped off and go to the end of the Timeline. This is not readily evident. Then, after editing and tightening up your Clips, these "strays" will be hung out at the end, and you will likely not see them, except by playing your Timeline completely, until it stops, by hitting the "\" key or by hitting the End key and looking carefully.
Good catch on Paul's part, and glad you got it sorted out,