How to Upload wallpaper to Blackberry App World without COD files...

I've always enjoyed making wallpapers for my BB, so I decided why not share them with other BB users. I listed it as a theme, because I didn't see wallpaper as an option, and I went through the entire process to upload them to App World, but it is asking me to upload batch files or COD files. Is there a way to bypass this? I I've read that others have had this problem too, but I didn't see an answer. Maybe someone can help.

Thanks! :)