Hi Toril,
Was it the same flash drive that had that particular style on it originally?
It sounds like the path Genos is looking for, for that style has been changed, and comes up with the error. Try putting your styles on the USER section instead of using USB flash drive.
Also if you have more than one USB flash drive, you have to point the Genos to the right one. It is possible for the Genos to have three USB's installed at the same time.
Hope this helps,
Rick D.