I've been lasering throughout the day.

Suddenly, when I push the "run" button, the laser machine never picks up the file. Nothing changes in the status window. No lasering is done.

Yes, I rebooted.
Yes, I unplugged everything and waited a while before connecting again. 3 times.
Yes, I checked the configuration. My files should be going to the L-Solution port.

What next? Any ideas?