css styles fail to create media thumbnails with Genesis theme and possibly others.

Howdie folks,

So I just spent time tracking MY problem down, but I have no idea if it affects other set ups or installations. Basically the module works fine under Bartik, but then under a Genesis-based theme, no longer can generate thumbnails. I checked out other patches and bug fixes but found nothing.

Basically in my theme I noticed that media_gallery.css was theming based on:
> .field-items > .field-item
but in my theme there wasn't a class called .field-items so I simply replaced all references to that with:
> .field-item
and it started to work. If someone is willing to try this out and see if it breaks other themes this might be a very quick and easy fix.