Pete, the new Node Board didn’t work from the outset. It initially said node board updated and then not recognised. The Stern info states new node boards don’t work on pre v1.07 software due to firmware updates. Hence I hoped the update would resolve. Back in touch with Patrick from Stern this evening so wil see what else he can suggest (other than try in another machine).I think it's highly unlikely to be a code issue, given that it used to work on this code. Sounds like a cable issue or incorrect node board configuration.