Someone commenting on my blog mentioned that Comfort logs frequencies to the ADIF file in European format, using comma as the decimal separator. This causes an error when the file is imported into another log program.
That is a trap I have fallen into myself when my Pascal programs are used by European hams! The solution involves the system value DecimalSeparator. In Britain and USA we use a period character '.' as the decimal point, not a comma as you do in Germany. A comma is used as the thousands separator.