Description:
------------
If I use in the code above, 
$query  = "select inst_codigo, inst_nombre from rdc_tam_institucion";
It works :D



In the MySQL command line
>select * from rdc_tam_institucion;

this also works :D

Reproduce code:
---------------
        $db_selected = mysql_select_db('db_redicas', $link);
        
        if (!$db_selected) {
            die ('Can\'t use db_redicas : ' . mysql_error());            
        }
	
        $query  = "select * from rdc_tam_institucion";
        $result = mysql_query($query);
	
        if (!$result) {
            die('Invalid query: ' . mysql_error());
        }


Expected result:
----------------
execute the query

Actual result:
--------------
Warning: mysql_query(): Unable to save result set in C:\Documents and Settings\Alberto.MINNESOTA\Mis documentos\BlueCode\Redicas\Software\Directorio.php on line 27
Invalid query: Unknown MySQL error