Hi BReal2
Sorry to see that your TV360 boxes aren't working despite being swapped out. Do yuo have one main 360 box with a hard drive and a mini box, or two mini boxes?
Have you tried following the instructions in the online help for that error code? (It might activate the boxes although I doubt it)
/tv-error-codes/cs1011/start
Generally it's an account retrieval error which means the equipment hasn't been activated yet and can be remedied by a call to the activation line on 0800 953 9500. It sounds like when the boxes were swapped out that the system wasn't updated with the serial numbers from the new boxes.
You will need the serial number of each 360 box along with your account and area number.
If that's unsuccessful it has to be passed to 2nd/3rd level support to update the systems manually which normally takes 48/72 hours, and if that fails it will require another tech visit for another box swap.