[Plugin: podPress] Can't validate Podcast, 404 Error

I am new to podpress and am unable to validate my feed. I updated a post to include an attachment but am unable to see the feed. Here is my URL

http://www.seacoastbeveragelab.com/feed/podcast/

I have clicked the ‘activate feed’ check box. Does anyone have any troubleshooting steps. I would like to get this into iTunes.

Thanks.

http://ww.wp.xz.cn/extend/plugins/podpress/