apply configuration changes failing-When we do modificatios

[sposa]

Applying configuration

Command submitted for processing
Waiting for configuration verification.....
Configuration verification failed.

An error occurred while attempting to apply your configuration to Nagios Core. Monitoring engine configuration files have been rolled back to their last know good checkpoint.

View a snapshot of this configuration error

[hsmith]

Did you add a new service?

If so, did you make sure you specified a host / template for it?