Floor setting not saving (blurry/doesn't appear to anti-alias)

This problem doesn't effect usability. It's just an annoyance. I have in my settings for the floor to be my current background. For whatever reason, when it first opens up, the image is jagged and not really right. If I go into settings and even just close settings without changing anything it reloads the bumptop theme and then it looks normal. The background was bigger before because it was big enough to be my full background and I know the size has changed, but I'm not totally sure why it doesn;t make it as good as it can be without me going into settings and closing. I guess it refreshes...?

Anyhow BumpTop is awesome otherwise, but I was just wondering if there was a fix or something I wasn't aware of.

BTW, I'm running 64-bit Vista with everything updated (as far as I know).

Thanks in advance. :)