Thunderbird 17.0.4 [italian localization]

If I install Thunderbird 17.0.4 in english language, the ReminderFox 2.0.2 add-on works right.

If I install Thunderbird 17.0.4 in italian language, the ReminderFox 2.0.2 add-on does not display reminders list.
I can create reminders, but the list is NOT diplayed.

The strange thing is: if I go with mouse over the date the reminder is set, a window pop-up with the name and options for the reminder.

ToDo's list is working OK.

When I open ReminderFox to create a reminder, this error on console error logs appears:
Data e ora: 20/02/2013 11:34:36
Errore: TypeError: column is null
File sorgente: chrome://reminderfox/content/addReminderDialog.js
Riga: 6620

THIS ONLY HAPPENS IN ITALIAN LOCALIZATION.

Thank You.