Please use proper English on our forums.
If you are having trouble with a custom build, you should post a question in the thread dedicated to that build in the "Unsupported Builds" forum. I can tell you, though, that the error you received probably means that the custom build you tried has not been updated since before support was added to Rockbox for the 80 GB iPod. You should try a different theme, or find another custom build that contains the patches required for the theme that you want to use.