This is not good. LightBurn should not crash, so thank you for reporting this. Do you get any crash report or message displayed when the crash happens? There is information in that message that tells us what was going on as the crash happens, so we would like to see any that get presented.
You can roll back to a ‘known working for you’ versions from this link: Older Versions of LightBurn.
Additionally, we are testing a version that addresses some communications issues we have with the last public release. If you are willing, we have an update version for testing you could try.