Lightburn shutsdown while working on vectors

When working on editing nodes suddenly lightburn shuts down. By reloading the file there accures a endless line on the spot i was working on. All movements are very slow and when trying to delete the endless line lb shuts down again. Only by selecting the work without that line en paste it into a new file sometimes it can be saved. Anyone know what’s happening ? Ik work on a pc I5 processor and Windows 10

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