Integrating Yii In A Server

I tried to print the user SiteControllerObject:

in localhost which it works:

SiteController Object ( [curr_crop] => 30 [layout] => //layouts/column1 [menu] => Array ( ) [breadcrumbs] => Array ( [Login] => Array ( [0] => login ) ) [defaultAction] => index [_id:CController:private] => site [_action:CController:private] => CInlineAction Object ( [_id:CAction:private] => index [_controller:CAction:private] => SiteController Object *RECURSION* [_e:CComponent:private] => [_m:CComponent:private] => ) [_pageTitle:CController:private] => [_cachingStack:CController:private] => [_clips:CController:private] => [_dynamicOutput:CController:private] => [_pageStates:CController:private] => [_module:CController:private] => [_widgetStack:CBaseController:private] => Array ( ) [_e:CComponent:private] => [_m:CComponent:private] => )

in my server where it would output $this->renderPartial() a blank ajax portion of the page:

SiteController Object ( [curr_crop] => 30 [layout] => //layouts/column1 [menu] => Array ( ) [breadcrumbs] => Array ( [Login] => Array ( [0] => login ) ) [defaultAction] => index [_id:private] => site [_action:private] => CInlineAction Object ( [_id:private] => index [_controller:private] => SiteController Object *RECURSION* [_e:private] => [_m:private] => ) [_pageTitle:private] => [_cachingStack:private] => [_clips:private] => [_dynamicOutput:private] => [_pageStates:private] => [_module:private] => [_widgetStack:private] => Array ( ) [_e:private] => [_m:private] => )

if you would look closely, the difference is in
the server, CController and other CComponent, are missing. Why is this? I've uploaded Yii in my server also. Is there something I'm missing?