[cacti] - add device with cacti

Hi everyone,

I have a problem with cacti (version 0.8.8a)
I have installed the centos 5.8 virtual machine and I have configured
all services.

when I add a device and press Save, have this error: Error: Save Failed.


I see that log:

09/25/2012 03:05:01 PM - CMDPHP: Poller[0] ERROR: SQL Assoc Failed!,
Error:'1146', SQL:"SELECT 1 AS id, ph.name, ph.file, ph.function  FROM
plugin_hooks AS ph  LEFT JOIN plugin_config AS pc  ON
pc.directory=ph.name  WHERE ph.status = 1 AND hook = 'poller_bottom' 
AND ph.name IN ('settings', 'boost', 'dsstats')  UNION  SELECT pc.id,
ph.name, ph.file, ph.function  FROM plugin_hooks AS ph  LEFT JOIN
plugin_config AS pc  ON pc.directory=ph.name  WHERE ph.status = 1 AND
hook = 'poller_bottom'  AND ph.name NOT IN ('settings', 'boost',
'dsstats')  ORDER BY id ASC"

where is the problem?
thanks in advance
regards
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