Lightburn don't make the whole job

Hi,

If i configure Lightburn to draw a simple square i didn’t have problem. But if i put a string like “ABCDEFG…Z” he will draw 4 letters and stop with the message “Feed finished in x seconds”… Euh… Where is the complete string ?

I configure the MPCNC as Marlin into LightBurn… Must i change something ? I use a Rambo 1.4 card.

Regards,
Fred