My RepRap is making now good prints after some issues were corrected. This forum has been very helpful for me. However, anytime, on the first printing or after one or two printings. Repertier crashes and I lost my work and waste some PLA. The message on my computer is that "repetier stopped working and windows is trying to identifiy the problem" Windows never find anything and the next message is that i have to clic out. consequently, I lost my work after it is very advanced in some cases. My board is Melzi Ardentissimo.
I'd really appreciate your wise insights in this matter. Thank you