Just to be entirely clear, when you say nothing happens, do you mean absolutely nothing, or do you mean you get a message saying the calibration pattern wasn’t found, no matter what you do?
If it’s the former, this could be a Windows permissions issue. If you’re using Windows 8, try right-clicking LightBurn and running it in ‘Compatibility Mode’.
Another thing to try is changing the Camera Capture System in your LightBurn settings from ‘Custom’ to ‘Default’.
If it’s the latter, here are some tips on the lens calibration (and alignment) process:
