Could it be because I'm already connected via BLE to the Web IDE and I am trying to connect to another BLE device?
Sorry for all the serial talk, I got confused by this. I thought you were connecting to another espruino that's also connected to another webide. The devices don't advertise (you can't connect to it) if they're already connected to a different device (which in this case is your computer).
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Sorry for all the serial talk, I got confused by this. I thought you were connecting to another espruino that's also connected to another webide. The devices don't advertise (you can't connect to it) if they're already connected to a different device (which in this case is your computer).