CharacterMetrics non valido. L'avanzamento orizzontale (definito come la somma di BlackBoxWidth, LeftSideBearing e RightSideBearing) non può essere negativo.
Click to search this error in Google
English version
CharacterMetrics is not valid. The horizontal advance (defined as the sum of BlackBoxWidth, LeftSideBearing, and RightSideBearing) cannot be negative.