RSS/XML Problems and cover art problems

Your feed and its single episode work OK when subscribing manually in the iTunes application. However Feedvalidator comments that the feed is being served as 'text/plain' when it should be 'application/rss+xml' - this is not to do with the coding of your feed but the way the server is behaving. It's possible this may upset the Store, so you need to take this up with the people running your server.

As to the image, the tag reads:

<itunes:image href="http://www.nerdcastnetwork.com/STAWS.jpg"/>

and this image is 180 x 180px and so will be rejected.

The image is still the same small size. So either you aren't in fact updating it, or the method you are using to create your feed (which is not apparent from the feed itself) is resizing it for you. Some podcast creation services do this, though it's usually to 300 x 300, which used to be the requirement several years back; it seems a but unlikely that anything would reduce it to 180 x 180 but I've no way of knowing what is going on from the available evidence.

The image URL is presumably http://www.nerdcastnetwork.com/staws/STAWS.jpg and this is 1500 x 1500 and below 500kB so it should be fine. To be on the safe size with the submission I should change the filename slightly and change the feed to match. (This is necessary when you change the image in an accepted podcast, but I don't know whether it's an issue with a re-submission).

However when you re-submit you may be told that the feed has already been submitted - this is a long-standing and annoying bug in the Store software. The workaround is to change the title of the podcast slightly - you can always change it back once accepted. If you can change the feed filename that might also be advisable, but of course you can't change that afterwards. (No-one will see it unless they look for it anyway.)

You've apparently changed the feed URL so I can't look at the feed until you post the new URL.

<itunes:image href="http://www.nerdcastnetwork.com/STAWS2.jpg"/>

There is no file at that address.