Hi @jtsheedy -
What version of BlueOS are you using? Do available extensions load or BlueOS versions on that page? I suspect your internet connection is too slow, or firewalled, and thus BlueOS can’t reach the internet to fetch the scripts. You could try connecting your system to a phone WiFi hotspot?
It’s also possible to download and install the only script required manually, it controls the flashing NavLight. You do need to be able to download the latest BlueBoat parameters and ArduRover autopilot version though!