Cannot Remove Editing "Frames" - Elements Premiere 14

Just when I thought I was out of the woods I am stuck with another problem. Just as I was completing a project with a nice opening title that has eaten up probably 100 hours, I cannot get rid of the two white "frames" that appeared when I was editing the title. They are superimposed now on the ENTIRE 15 minute video. in the entire video. I've seen these frames overlaying title before but they disappeared after I saved my work. can someone tell me how to get rid of them?