i have created a short captivate software simulation project containing slides and audio. It all looks fine in Captivate - whilst on the screen display or when I run it as a project from beginning to end. However when I publish it to MP4, it loses some of the visual images on the screen. Either they disappear altogether or they become distorted. I have recreated the mp4 again, but the exact same thing happens. Any ideas why this would happen? and what I can do to stop it happening?