1.3.00 There was a problem sending data to the laser

I just installed the latest Lightburn 1.3.00 update and I am getting the “problem sending data to the laser” error. I am using a Snapmaker A 350 and everything was fine until the upgrade. The machine is connected through USB and communicating with the laser. I can control it by typing Gcode into the console but none of the regular laser controls work. Frame, Home, and Origin do nothing and when I hit Play I get the data send error. Does anyone have any suggestions?

I’m about ready to uninstall the update but I don’t want to lose my machine settings.

Thank you and yes, we are aware. We just posted this to the top of the forum for others to see. :slight_smile:

Hi LightBurners! We’re aware of a communications issue with GCode devices with the recently released version 1.3.00. At this very moment we’d suggest NOT upgrading LightBurn while we await a fix to be pushed.

As always, you can downgrade LightBurn from our releases archive here: Releases · LightBurnSoftware/deployment · GitHub

This post will be updated as needed with more details. Thank you for your patience.

You can downgrade to a previous release without loosing your settings.

I’m glad it wasn’t me, it was driving me crazy? Will I need to reinstall my machine settings if I downgrade?


Just download and install, all should be preserved.

I just did that and it is working again. Thank you

fix has been posted, you can try again now :slight_smile:

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how do i know what version I previously had ? I’m having the same problem. i tried 1 of them and the laser power isnt the same.

You don’t even have to downgrade - you can just re-download 1.3.00 and re-install it. A piece of code got pulled into this release that wasn’t intended to be, and wasn’t ready, but that was quickly pulled and updates have been posted.

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thank you, much appreciated

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