[root@LkennagiosP01 nagiosxi]# tail -20 /var/log/httpd/error_log
[Tue Mar 25 13:42:01 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[Tue Mar 25 13:42:12 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[Tue Mar 25 13:42:23 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[Tue Mar 25 13:42:34 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[Tue Mar 25 13:42:45 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[Tue Mar 25 13:42:52 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/index.php
[Tue Mar 25 13:42:52 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/index.php
[Tue Mar 25 13:42:56 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[Tue Mar 25 13:42:59 2014] [error] [client 172.22.27.159] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://nagios/nagiosxi/login.php?logout
[Tue Mar 25 13:43:00 2014] [error] [client 172.22.27.159] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://nagios/nagiosxi/login.php?logout
[Tue Mar 25 13:43:07 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[Tue Mar 25 13:43:18 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[Tue Mar 25 13:43:26 2014] [error] [client 172.26.68.178] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://sherlock/
[Tue Mar 25 13:43:29 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[Tue Mar 25 13:43:40 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[Tue Mar 25 13:43:51 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[Tue Mar 25 13:43:52 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/index.php
[Tue Mar 25 13:43:52 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/index.php
[Tue Mar 25 13:44:00 2014] [error] [client 172.22.27.159] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://nagios/nagiosxi/login.php?logout
[Tue Mar 25 13:44:02 2014] [error] [client 172.22.161.101] PHP Fatal error: Call to undefined function use_2014_features() in /usr/local/nagiosxi/html/includes/dashlets/gauges/gauges.inc.php on line 23, referer: http://172.22.2.123/nagiosxi/includes/components/opscreen/opscreen.php
[root@LkennagiosP01 nagiosxi]#
LATEST BREAKING NEWS!
I forgot to mention that I'd upgraded to 2.9 and then downgraded to 2.8.
When I did the upgrade to 2.9 from 2.6, everything worked perfectly.
But I had to downgrade to 2.8 in order to match my back up servers config.
Downgrading generally breaks things. It's fixable but I don't have the experience with this to feel comfortable leading you through it. I personally would just upgrade, but if abrist or sreinhardt (tomorrow, he's out today) are willing they might have a better idea of what's needed.