Error on Usermodel !!

[eluser]Dileep[/eluser]
EDITED :

Code:

$data=array(
            'username'=>$username,
            'userID'=>'',
            'pass'=>$password,
            'email'=>$email,
            'isconfirmed'=>"FALSE"
            );
            
        
            
            
            $this->db->insert('userreg',$data);

the coding working successfully because it inserting the correct data to the databse,but when i echo $this->db->display_errors();it showing the following error ,

A Database Error Occurred

Filename: C:\wamp\www\userreg\application\models\usermodel.php

Line Number: 39

and the line num 39 is echo $this->db->display_errors();
line num 38 is $this->db->insert('userreg',$data);