Empty Logbook.db

Hi
Today I tried to export a flight to a KML file and FiF generated an empty file.
Trying to re generate the file, FiF could't find any logs.
Logbook.db is only 88KB.
Searching FiF data ditectory I found a 1.42MB logbook.db.back.
Something tells me all my logs are there.
1) How to recover them?
2) Why did I (or FiF) loose the files?
cheers
bb
Today I tried to export a flight to a KML file and FiF generated an empty file.
Trying to re generate the file, FiF could't find any logs.
Logbook.db is only 88KB.
Searching FiF data ditectory I found a 1.42MB logbook.db.back.
Something tells me all my logs are there.
1) How to recover them?
2) Why did I (or FiF) loose the files?
cheers
bb