I've got a problem with my nagios

Hi, my name is paco, i’m from spain, now I’ve got a nagios 2.X running in a debian machine.
The last week was good, but today when I see my nagios:
Whoops!
Error: Could not read object configuration data!..

I passed this command: /usr/sbin/nagios2 -v /etc/nagios2/nagios.cfg

and when i see the result, i see this:

Nagios 2.6
Copyright © 1999-2006 Ethan Galstad (nagios.org)
Last Modified: 11-27-2006
License: GPL

Reading configuration data…

Running pre-flight check on configuration data…

Checking services…
Checked 609 services.
Checking hosts…
Checked 609 hosts.
Checking host groups…
Checked 13 host groups.
Checking service groups…
Checked 0 service groups.
Checking contacts…
Checked 1 contacts.
Checking contact groups…
Checked 1 contact groups.
Checking service escalations…
Checked 0 service escalations.
Checking service dependencies…
Checked 0 service dependencies.
Checking host escalations…
Checked 0 host escalations.
Checking host dependencies…
Checked 0 host dependencies.
Checking commands…
Checked 54 commands.
Checking time periods…
Checked 4 time periods.
Checking extended host info definitions…
Checked 24 extended host info definitions.
Checking extended service info definitions…
Checked 0 extended service info definitions.
Checking for circular paths between hosts…
Checking for circular host and service dependencies…
Checking global event handlers…
Checking obsessive compulsive processor commands…
Checking misc settings…

Total Warnings: 0
Total Errors: 0

Things look okay - No serious problems were detected during the pre-flight check

What happend with my nagios? What is the problem? Are there any people that help me please?

Greettins from spain.

paCo r.g.

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