An example from here
http://old.ghielectronics.com/docs/31/watchdog
1st deploy and debug works, every other afterwards throws an exception
then I have to use FEZ config to erase the app so that I can debug again.
found a semi-workaround here:
I have 30 unattended devices rolled out two weeks ago that started freezing, couldn’t get the watchdog to work.
also as a side problem I cannot get the new TinyCLR OS to work on G30TH, I know its still alpha release but the new config tool does not work at all.