So when I run the Preflight verifier with it set to PDF/x1a, I get a bunch of errors that state "Image dimension is smaller than its frame." This despite the fact that I always right click images and select "Adjust frame to image" every time I insert an image. So I went to the offending images and tried "adjust frame to image." Error not corrected. Then I open the image in PS, look at the dimensions, manually set the dimensions of the image in Scribus to match... error not corrected. What is going on here?