Thanks for the reply Mr B.
Yes, the network settings look okay, and the PC can ping the Mix Rack whatever the length of cable.
No router or switch – it’s a direct connection.
Yes, the yellow triangle appears.
Since I posted I’ve found out some more. If I connect the PC directly to the rack, Editor will work as long as the cable length is below 3 metres. Above that it fails to connect and the error messages in the log file claim the system is looking for an address that isn’t on the system – from memory, something like 192.168.213.1
I haven’t ruled out the possibility of the PC being faulty, so the next step is to try another computer.
I’d still welcome any comments though – why should the cable length be such an issue, especially over such a short run?