Bug with youtube

Hello, I love catch box! thanks !!!! But there is something really annoying. When I post an article STARTING directly with a youtube video, the youtube link appears in the excerpt. It's really ugly. Anyway to correct this or hide this ? Here is an example of what I mean. http://www.hiboox.fr/go/images/divers/bug1,4d75e2d8d2c9865cae66acbc0b07ea73.jpg.html Thank for your help.