Doppler .NET Error

I have a Windows XP VM that I use to download all of my podcasts to a network share.
I was using Juice but recently moved back to Doppler. Every time I start Doppler it
throws a .NET Framework error.

I think that I need to look for a new podcast aggregator as it appears that Doppler
development has slowed or stopped. I am seeing notes in the Spring and Fall of 2007
that indicate that it is still alive.... but when I got out to CodePlex to look for
the latest and info and version there are no releases.

This looks like another set of tools that will be moving to Linux for me and removing
another reason to continue using a Windows XP machine.