Missing Video Clips when Exporting
So after upgrading to 2017, I am having issues with encoding videos now. Basically created a 'split-screen' video, but when I go to encode it to H.264 format, one of the video clips is shown as missing. Go back to premiere, preview, the whole thing, and it's all there. Go to export, getting frustrated.
Any one have this happen, have a fix, a workaround? After working almost 6 hours on this video, bit tired.
Here's a screenshot:

