Header image not showing up, still only solid background

Hi, I am using Clean Business Pro. I started with free version, then have had to start over with the Pro version. Why is the header image NOT showing up in the header behind the site title and tag line? Why is it just the solid color background?? ALso, I test changed that solid color background to a new color, and that color shows up but also a narrow black band at the bottom of it. WHere is THAT coming from? I need to get the header image showing properly behind site title and tagline; like it did in the free version. URGENT. Thank you