It turns out it was the USB board, which has now been replaced and the machine is working fine again!

Yes, tried a new USB lead.
Just wondering if when your PSU went you got the same kind of error message?

Thanks Pete. We tried all these, even tried with 3 separate laptops with fresh installs of the drivers. Tested the USB power output which said 5v.
The machine is a 2009 build... has it just reached the end of the road?

Hello, I'd be very grateful for some help with my VL300, which has stopped communicating with my laptop. It seemed to pause halfway through a job, and 5 minutes later it still wasn't resuming cutting. I went to try and stop the cutting on the Versalaser Control Panel, but it said: "Please verify tha...