Watchdog security -broken pipe

[RuthServer]

Hi,
i try to update the watchdog rkhunter modul with plesk:

grep: write error: Broken pipe
Mirrorfile /usr/local/psa/var/modules/watchdog/lib/rkhunter/db/mirrors.dat rotated
Using mirror
[DB] Mirror file : Failed to retrieve updates.
Failed to retrieve security knowledge base updates from the update server.
The current knowledge base will be used during security scanning.

? write error: Broken pipe.. what is that?
I have changed nothing. Maybe since the update to 8.1...

System: Suse10, Plesk 8.1

 

[RuthServer]

Hi,

problem is solved: the mirrors.dat was empty. There must be a version number + mirror adress like:

version=2006121200
mirror=http://rkhunter.sourceforge.net