green line when exporting

If anyone can help me resolve this issue I would be greatly appreciative.

I made a video from photos (25 minutes worth) and I exported them to youtube and my desktop and it worked just fine in replay. Then I went back and I added music to the clip and even though it played fine without any issues in iMovie in its entirety, when I export to anything (my desktop or on the internet), the audio plays in full but the images go away and there is a thin green line in the center of the screen. This happens no matter where I export it to. I have been trying for days to figure out what could be wrong during export but I can't figure it out. It even happens when exporting to theater within iMoive. I am using iMovie version 10.1.1

Please help me resolve this issue! I am thankful for your suggestions