The binary component required for %1$S could not be loaded, likely because the wrong version combination is being used. You are using %2$S %3$S together with %1$S %4$S. Please check https://developer.mozilla.org/en/Calendar/Calendar_Versions for details.
Impossibile cargar le componente binari pro %1$S, probabilemente per un errate combination de versiones. Tu usa %2$S %3$S in combination con %1$S %4$S. Controla https://developer.mozilla.org/en/Calendar/Calendar_Versions pro plus detalios.