that was my guess as well. As trying to attch the file did not work last time here is the contents of the I18nMsg_de_DE.properties file, where in my opinion the changes should be:
And here the I18nMsg_de.properties which might be valid as well.
currencyCode = EUR
currencySymbol = EUR
formatNumberCurrency = #,##0.00 \u00a4
(timzone, day and month names are stripped)
currencyCode = XXX
currencySymbol = XXX
eraAD = n. Chr.
eraBC = v. Chr.
firstDayOfWeek = 2
formatDateFull = EEEE, d. MMMM yyyy
formatDateLong = d. MMMM yyyy
formatDateMedium = dd.MM.yyyy
formatDateShort = dd.MM.yy
formatNumberCurrency = \u00a4 #,##0.00
formatTimeFull = H.mm' Uhr 'z
formatTimeLong = HH:mm:ss z
formatTimeMedium = HH:mm:ss
formatTimeShort = HH:mm
numberSeparatorDecimal = ,
numberSeparatorGrouping = .
numberSeparatorMoneyDecimal = ,
Judging from the last Date format in the second file it should work, with dates, but does not
And there would be the question where to set the German values for today, tomorrow...