Hard to diagnose without some hard data. How about posting your layout (use the Export feature on the Layout tab so we get images, etc) and your tournament files?
Here is the strange part. I deleted everything from my computer and reload TD then rebuilt a template with image, changed the text, and font size. Next I saved the template using Save As and renamed the the layout. When I loaded the layout the changes I made to the blinds, rounds minutes, etc, were saved but the image, fonts, and fonts size were not. I emailed the file to you...