Problem With Yii Extension Integratioin

Dear Friends,

I’m a New Yii Developer. I never Used any Extension in Yii, I want to add Ajax Uploader(http://www.yiiframework.com/extension/ajaxuploader) Extension in My Yii Application.

But I can’t understand this Documentation of this Site, I added the code in my main.php file under config folder. But It showing some Error when running application.

Please anyone tell me how to add an Extension in My Yii Application.

Thanks

First of all show error you’ve got.