Time Capsule archive failed

Hi Guys,

I tried to make a full backup of my TC to an external USB HDD using AirPort Utility -> Disks -> Archive. After about an hour it ends with the following error: "An error occurred while archiving the Time Capsule". Tried several times with the same result.

Do you know what's wrong? I can not see anything in the console log, neither in TC's log..

BTW, the HDD is OK. I could fill it up with data when it was attached to the Mac. But of course I wiped it before the TC backup to have enough space.

Your kind help would be appreciated very much.
Thanks a lot,

Istvan

 

Sure I did. It is Extended Journaled.
As said, ~50 Gigs are copied when it stops.
Everything is up to date.