DynDNS Updater for Mac forgets settings after daemon restarts (both Snow Leopard and Lion)

I am having this issue for a few weeks now (don't remember exactly when it started).

The Updater for Mac forgets my settings every time I restart the OS. This happened both on some late Snow Leopard Updates (it was working fine a before a few months ago).

I have the Updater running on two Macs, one of them has Lion upgraded from Snow Leopard and the other one has a fresh Lion install. However, both forget my settings after a reboot.

Actually, you can also reproduce it by restarting the daemon. After that all settings are gone.

I've gathered the logs from Console.app:

09/08/11 20:22:43,331 DashboardClient: Starting the DynDNS Updater Plugin…
09/08/11 20:22:43,331 com.apple.Dock.agent: 2011-08-09 20:22:43.329 DashboardClient[23172:803] Starting the DynDNS Updater Plugin…
09/08/11 20:22:44,787 DashboardClient: com.dyndns.widget.dyndnsupdater: Error: No Hosts Configured...
09/08/11 20:22:44,788 com.apple.Dock.agent: 2011-08-09 20:22:44.786 DashboardClient[23172:803] com.dyndns.widget.dyndnsupdater: Error: No Hosts Configured...
09/08/11 20:36:07,745 DynDNS Updater: unable to get sandbox extensions: The operation couldn’t be completed. (LibrarianErrorDomain error 6 - The operation failed.)

Obviously the Dashboard errors are coming from the Dashboard widget I'm also running.

Let me know if I have to provide any other details.

I did the usual debugging: reinstall the app, remove all preference files, etc. I even did a clean install and it didn't help.