How to avoid repeating logos when creating Background in a custom skin?

I'm trying to design a custom robohelp skin. However, I'm seeing a repeating logo, as shown below. It appears to be repeating below the line that separates the top area from the rest of the panel. Does anyone have any idea what's going on here and how I can stop the second image?

Note that the image is also duplicated at the far right of the top area, so its repeating horizontally and vertically.

Note: I apologize if this has been asked already. I can't seem to find the search window in the forum UI any more. If you can help here too, I'd appreciated it.