New Update, no communication with laser

[Sakura74 (Miss Clair Laver)]

I have updated the lastest Lightburn and since that it won’t connect to my machine. It says, Port failed to open - already in use? Anyone have any ideas? I have turned everything off and tried again, but nothing

[MikeyH (Mike Hembrey)]

Rather than say it all again, I am providing a related link. Laser wattage is not relevant here.

Light burn port failed to open-already in use?

I would try first by trying to reinstall your laser. Reinstalling the driver may help. [Setting Up Your SCULPFUN S30 With LightBurn] if that does not help lets try other methods.