While doing a definitions update, I hat the following report:

ClamAV update process started at Sat Jul 11 10:00:40 2009
main.cld is up to date (version: 51, sigs: 545035, f-level: 42, builder: sven)
Downloading daily-9539.cdiff [100%]
Downloading daily-9540.cdiff [100%]
Downloading daily-9541.cdiff [100%]
Downloading daily-9542.cdiff [100%]
Downloading daily-9543.cdiff [100%]
Downloading daily-9544.cdiff [100%]
Downloading daily-9545.cdiff [100%]
Downloading daily-9546.cdiff [100%]
Downloading daily-9547.cdiff [100%]
Downloading daily-9548.cdiff [100%]
Downloading daily-9549.cdiff [100%]
ERROR: cdiff_cmd_close: Not all DEL/XCHG have been executed
ERROR: cdiff_apply: Can't execute command CLOSE
ERROR: cdiff_apply: Error executing command at line 22
ERROR: getpatch: Can't apply patch
Downloading daily.cvd [100%]
daily.cvd updated (version: 9554, sigs: 40860, f-level: 43, builder: mcichosz)
Database updated (585895 signatures) from database.clamav.net (IP: 193.206.139.37)

...and then it completed.
Have I something to do to fix the issue?
Thanks
RB

As Sherpya said in this post, it's okay: https://forums.clamwin.com/viewtopic.php?t=2414

Regards,

this error looks a bit different, you should check if you get it again, but the signature update it's ok: