First, always try a second time when you get that message.
Things almost always “just work” on the mac, so if they don’t (by the second try) it’s probably a hardware problem.
T
ry connecting just the EBB to your computer, without the power supply. Do any lights come on?
Next, check for communication (you can still leave the power supply off). Use the “Manual” tab in EggBot Control, and select from the menu “Check EBB Version.” This will let you test the connection a little faster.
If you can’t get a connection, try a different USB cable if you have one, and try a different USB port on your computer if you have one. If you have access to another computer, you might try that as well. If it’s not working we’ll need to replace your EBB– please contact customer service directly.