Videos on DVD-Video/Audio clone hangs

On cloned DVD containing both DVD-Video and DVD-Audio, the videos in Extras section do not play – they hang indefinitely when chosen in the Extras menu. This works ok when using the original DVD. This DVD is mainly music DVD containing music and still pictures on DVD-Video part, music on DVD-Audio part (not visible in a plain DVD player), and some videos accessible from Extras on the main DVD-Video menu.

The music tracks including still pictures on DVD-Video section seem to work ok on the clone. When choosing Extras on the main menu and then selecting Videos on Extras menu, a list of videos is shown. When a video is selected, it doesn’t play at all, it hangs on the selection. The same works ok on the original DVD.

The DVD is http://store.acousticsounds.com/browse_detail.cfm?Title_ID=15049

Please advice, thank you.