[CentOS] Logrotate errors

Hi all,

 I have a problem with logrotate and I don't know why. In
/var/log/messages appears these errors:

Apr  8 15:01:01 plzfnsm02 logrotate: ALERT exited abnormally with [1]
Apr  8 16:01:01 plzfnsm02 logrotate: ALERT exited abnormally with [1]
Apr  8 17:01:01 plzfnsm02 logrotate: ALERT exited abnormally with [1]
Apr  8 18:01:01 plzfnsm02 logrotate: ALERT exited abnormally with [1]
Apr  8 19:01:01 plzfnsm02 logrotate: ALERT exited abnormally with [1]
Apr  8 20:01:02 plzfnsm02 logrotate: ALERT exited abnormally with [1]
Apr  8 21:01:01 plzfnsm02 logrotate: ALERT exited abnormally with [1]
Apr  8 22:01:01 plzfnsm02 logrotate: ALERT exited abnormally with [1]
Apr  8 23:01:01 plzfnsm02 logrotate: ALERT exited abnormally with [1]

It seems the problem if with this logrotate.conf (executed every hour):

create
dateext

/srv/www2/logs/viewer.log {
   size 512k
   create 0640 www www
   missingok
   rotate 7
   compress
   delaycompress
   copytruncate
   notifempty
}

Doing a debug:

[root at www02 ~]# logrotate /data/config/etc/logrotate.conf -dv
reading config file /data/config/etc/logrotate.conf
reading config info for /nsm/moloch/logs/viewer.log

Handling 1 logs

rotating pattern: /srv/www2/logs/viewer.log  524288 bytes (7 rotations)
empty log files are not rotated, old logs are removed
considering log /srv/www2/logs/viewer.log
  log needs rotating
rotating log /srv/www2/logs/viewer.log, log->rotateCount is 7
dateext suffix '-20140409'
glob pattern '-[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]'
glob finding logs to compress failed
destination /srv/www2/logs/viewer.log-20140409 already exists, skipping rotation

 According to this kb from redhat's website:

https://access.redhat.com/site/solutions/39006

 problem could be selinux. But SElinux is disabled:

[root at www02 ~]# sestatus
SELinux status:                 disabled
[root at www02 ~]#

 Any idea?? Could be a bug??

 Host is a CentOS 6.5 x86_64 fully patched.

Thanks.