File Corruption - Background-Image in CSS HTML tag

After this most recent Dreamweaver update, I am experiencing corruption and CSS execution distortion in my .html files when I insert the background-image: url() tag in the attached CSS file.  It does not matter what file I use as the background or if I am on a different computer.  I have even retyped both files and checked them for errors.  Has anyone experienced this?  If so, what is the solution?