This has me stumped. I whittled my ugly config down to 35 lines, and was still able to re-create the error. Any ideas what is wrong? I'm running Nagios Core v. 3.2.3. Much thanks in advance! -Eric Error is: Error: Could not expand servicegroups specified in service escalation (config file '/home/opsmon/etc/nagios/objects/qbo/foo.cfg', starting on line 13) Error processing object config files! Here's the config: define servicegroup { servicegroup_name group-1 alias All Services register 0 } define contact { contact_name primary-oncall alias Primary Oncall email <a href="mailto:foo@bar.com">foo@bar.com</a> } define serviceescalation { servicegroup_name group-1 first_notification 1 last_notification 6 notification_interval 5 contacts primary-oncall } define service { servicegroups group-1 host_name <a href="http://admin.qa">admin.qa</a> check_command check_foo } define host { host_name <a href="http://admin.qa">admin.qa</a> address 127.0.0.1 } define command { command_name check_foo command_line /bin/true }