Webalizer error

[itwillcome]

Hi all,

Last week my server was shutdown because of power failure.
And after reboot, the webalizer does not update statistics anymore.

Now every day when webailzer runs, I get an email:
================================================
/etc/cron.daily/00webalizer:

Error: Unable to restore run data (99)
/etc/cron.daily/0logwatch:

You have old files in your logwatch tmpdir (/var/cache/logwatch):
logwatch.sqTADAON
The directories listed above were most likely created by a
logwatch run that failed to complete successfully. If so, you
may delete these directories.
================================================

I remove the tmpdir. No use.

I tried to remove and install webalizer again. Cannot solve the problem.

I have searched google and try suggestions like:
# rm -f /var/www/*/web/stats/webalizer.current
# rm -f /var/www/*/web/stats/webalizer.hist
# /etc/cron.daily/00webalizer

Still the same problem:
Error: Unable to restore run data (99)

Can anybody help?