E.1 -> "Can't find DXF file"
E.2 -> "Can't find material tag in DXF"
E.4 -> "Can't find outline"
E.6 -> "Error in DXF reading"
E.7 -> "Impossible running estimation!", "Error in machining!"
E.8 -> "Open paths found"
E.9 -> "Outline tool diameter not found!"
E.10 -> "Error in nesting function!"
E.12 -> "Error on control counting. Lost part, sheet, bunk, etc..."
E.13 -> "Error, outline thickness must be negative!"
E.14 -> "There are entities that are not CompositeCurves or Arcs"