I am trying to set up a M1 to stream footage of a film edit taking place in London to a producer in Leeds. He wants to see whats going on. I set everything up with his laptop and the M1 up in Leeds and was getting a signal fine. This was obviously on the same network. I then moved the M1 down to London and although the Slingbox Desktop software identifies the right Slingbox, he can not get a picture )or sound). It just says that the Slingbox is unavailable and a 71 error. We are based in a post-production house so I asked them to check for any firewall that might prevent the access. They have allowed access for that ethernet port so I have run out of ideas!!