I made a mistake by importing the same ADIF twice which gave me each QSO twice in the log.
I decided to shut down the program and remove the log-file that I suppose is the "cqrlog.fdb" under log_data. After re-start I imported my log again, refreshed the data and rebuilt the DXCC-statistics. I now says "0" DXCC no matter what I try to do. If I try to look into the DXCC-statistics, for example "confirmed only" it gives me an empty form with no DXCC-content.
The only way I have figured to restore the DXCC-function is to re-install the whole program.
Is there an easier way to get it back when it goes this way?