Sorry for the delayed response.
Yes, but only briefly. I just tried it and I press "Calibrate" and the the one laser turns on for a second then then a pause then the other. Then I get the error message.
Actually, never mind. Problem solved. I pressed retry a couple times after writing this (without touching the machine at all) and after about 4 times (I'd pressed it dozens of times before) it said "Ready to scan" and now I'm doing my first scan. I'm not sure why it wasn't working or if it'll stop again. I'll update if anything changes.