Hi Forexman77,
There has been an odd occurrence with one user so far, however when we downloaded the data range they mention directly from Dukascopy, all was fine.
Check out this thread to see if it helps you resolve the issue:
viewtopic.php?f=4&p=3345
It could be there was some sort of temporary glitch with the data on the Dukascopy servers that was since resolved.
Thanks.