Why doesnt my summary/subtitle show up on iDevices?

Im wondering im anybody can help me? When I publish my podcasts the summary and subtitle show up fine on pc and mac versions of itunes. However when I download them to my iDevice they dont show up.

So for example, when listening to other podcasts on my iphone or ipad if I tap the podcast graphic while an episode is playing, it flips the image around and shows the subtitle. But when I tap on the graphic on my podcast when and episode is playing nothing happens. Any thoughts what could be wrong? Im pretty sure my XML file is correct since it shows up correct in iTunes.

Thanks all.