Thanks, but I'm using IPad and IPhone and neither is working.
Unsubscribing then resubscribing to the podcast isn't fixing the problem. New episodes are shown in the ITunes store, but I cannot get any of them to download to a device. When I click on the download ("cloud") symbol next to a new episode in the store, both my phone and the IPad bounce out of the store and open up my podcast application, which shows the latest episode as #490. Nothing past #490 will download.
Is the ITunes link still valid?