I have one clip on a 16gb card, it's the last clip of an interview, and it has the red (magenta) exclamation mark in the corner. I can play and view the entire clip as a thumbnail, it's about 4 minutes long, and when I try to export it, I am only able to export about half of the clip. Is it reapairable or saveable. I have tried to do the repair steps in the manual. Any tricks or suggestions?