I asked for an evaluation of the new version before we rolled it out but it would only allow one "DEMO" channel so it was not something that could ever have got flagged.
I've spoken to Lanschool direct but they weren't helpful and the Support Rep couldn't understand why I had a problem with it (unbelievable I know!!!)
The option to roll back is a good one but although it works for demo's, internet restrictions, etc didn't work - which is why I opted for the upgrade.
Thanks for all your suggestions everybody!