Board is a RPi2b with a fresh image of 2016-05-27-raspbian-jessie.img, expanded / localized. Cayenne installed and PiFace 2 digital mounted. Using web based dashboard.
After adding the PiFace as a GPIO extension I can control the output pins via the extension page by clicking on the port numbers as seen below.
But when I try to add a widget like a relay or even a generic digital output, the widget populates the dashboard and then indicates unreachable.
I have been able to replicate this 3 times from card image through failure.
Ian