If you run into this one...where in Retail Pro all of the fonts in docdesign are printing/previewing incorrectly. In the two cases I've seen, the standard ARIAL font started to preview as a courier narrow. At first glance, you'd think the customer just changed the docdesign without telling us. Then you realize that it affects ALL docdesigns.
The issue is the graphics driver. You need to rollback the graphics card driver, or remove and then reinstall.