i get this error all the time, and the compiler doesnt give me a ip to connect to on my iphone. I am using a PC by the way.
UPDATE!
now i set up my local mac builder server and i get this error
Error: No devices are booted.
You are trying to run the app with the simulator, right?
This message means that the simulator wasn't started.
If you are using B4i v2.31 together with Xcode 7 then the simulator should start automatically.