Hi Sig,
Can you tell us more about your Laser engraver. A model number can be quite helpful.
Can you post pictures of what the laser did? Your comment about ‘the very beginning’ could be a simple setting error but that setting by itself won’t cause the laser to park and burn as described.
Can you open the Console window and enter $$ and copy-paste the information into a reply here?
It could be fairly helpful to repeat the test on some cheap throw-away boards and capture / share the information from the Console window after a job fails as well.
This may be of assistance in the pressured days to come.