A better explanation is that it does not run the sketch. Still learning the Moteino M0
The sketch does a serial print of the thermocouple value every four seconds, so this is my sketch run indicator.
With the MISO pin connected, I do not receive the serial print. Tried power cycling the MISO pin connected, tried pressing the reset button, M0 still does not run the sketch.
I have to physically remove the MISO pin, reset the M0, restart the serial monitor, wait for the error reports (because the pin is disconnected), then insert the MISO pin. When I do this procedure, everything works fine. Obviously, this is not ideal since a normal power outage will cause the sketch to not load.