All of a sudden, when I create a new title, it saves it as 1920 x 1080. But my video is only 720 x 480. I had hoped it was just the view in the Program monitor, but I saved the project, exported it and viewed it, and sure enough, my full page titles fill the entire screen, but my video is a tiny box in the middle of it. I have tried to change the titles properties but can't figure out how. I then changed the export size to 720 x 480, but it didn't help.
Correct your sequence settings or create a new sequence with the correct settings and import your existing sequence into it.