Seeing Exceptions With Multiple User Component

Hi all i am trying to add new user component(employer) along with user component, i am seeing exceptions when i use new employer component.

My config file



			// enable cookie-based authentication





				// enable cookie-based authentication




My UserIdentify and EmployerIdentify has similar authentication except model name changed.

Now when i try to check employer is guest


then i am seeing below exception

Missing argument 1 for CUserIdentity::__construct(), called in E:\xampp\htdocs\yii-1.1.12\framework\YiiBase.php on line 219 and defined 

can some one help me out on this.

Dear Pavan Kumar

user is an instance of CWebUser.

EmployerIdendity should be derived from CWebUser.