Are you sure this is not a "too many points" problem? My "diagonal slash the vinyl art to death" glitch happens when the cutter has to cut detailed art like extremely jagged fonts and large layouts, the cutter runs out of memory the best I can describe it and crashes and slashes. If I cut the layout into smaler sections, i.e. one word at a time, or one artwork at a time in the software and load them individualy in the cutter, they cut fine. One recent example to prove my point is a sprint car racers art I did on Illustrator, just fonts. I layed out everything to cut so that there would be little waste, and the total length was like 9 feet X 24"(width of vinyl used). The font was a simple one with smooth rounded edges and the machine cut about 75% of the work then crashed and slashed... Wasting the art and changing from USB to serial (I tried everything I could at the time with no knowledge) then tried again and the same result. I then went in and saved the names and numbers in about 10 different files, and cut them with no problems one after the other.