Try change content of '/etc/logrotate.d/kloxo' and '/usr/local/lxlabs/kloxo/file/kloxo.logrotate' with (taken from Kloxo-MR 7.0):
/home/httpd/*/stats/*_log
/home/*/__processed_stats/*_log
/usr/local/lxlabs/kloxo/log/*
{
daily
#create 0664 apache apache
#rotate 52
compress
delaycompress
notifempty
missingok
sharedscripts
postrotate
sh /scripr/restart-web -y >/dev/null 2>&1 || true
sh /scripr/restart -y >/dev/null 2>&1 || true
endscript
}