joomla search module.

Hello.
When I try to use the joomla search module for search information which I had created with your tool, my joomla (2.5.28) shows me several warnings like this: Warning: array_merge() [function.array-merge]: Argument #1 is not an array in /server_name/plugins/search/component_name/some_file.php on line 277 and on line 302, 307, etc.
I have solved this warnings, but the search it's not working, the server doesn't show me nothing despite I have written one record with information.
Could you help me?
Jaime