Yii User Management

I am getting foll. error after installing user Mgt. and mailbox modules.

Alias "role.RoleModule" is invalid. Make sure it points to an existing PHP file and the file is readable.

Stack Trace :

#0

/opt/lampp/yii/framework/YiiBase.php(198): YiiBase::import("role.RoleModule", true)

#1

/opt/lampp/yii/framework/base/CModule.php(283): YiiBase::createComponent("role.RoleModule", "role", null, array("roleTable" => "role", "userRoleTable" => "user_role", "actionTable" => "action", "permissionTable" => "permission"))

#2

/opt/lampp/htdocs/Matrimony/protected/modules/user/models/Yum.php(153): CModule->getModule("role")

148 }

149

150 // returns the yii user module. Mostly used for accessing options

151 // by calling Yum::module()->option

152 public static function module($module = ‘user’) {

153 return Yii::app()->getModule($module);

154 }

155

156 public static function hasModule($module) {

157 return array_key_exists($module, Yii::app()->modules);

158 }

#3

/opt/lampp/htdocs/Matrimony/protected/modules/user/models/YumUser.php(379): Yum::module("role")

374 $relations[‘managed_by’] = array(

375 self::HAS_MANY, ‘YumPermission’, ‘subordinate_id’);

376

377 $relations[‘roles’] = array(

378 self::MANY_MANY, ‘YumRole’,

379 Yum::module(‘role’)->userRoleTable . ‘(user_id, role_id)’);

380

381 }

382

383 if (Yum::hasModule(‘messages’)) {

384 Yii::import(‘application.modules.message.models.*’);

#4

/opt/lampp/yii/framework/db/ar/CActiveRecord.php(2338): YumUser->relations()

#5

/opt/lampp/yii/framework/db/ar/CActiveRecord.php(388): CActiveRecordMetaData->__construct(YumUser)

#6

/opt/lampp/htdocs/Matrimony/protected/modules/user/models/YumUser.php(49): CActiveRecord::model("YumUser")

44 ‘class’ => ‘application.modules.user.components.CAdvancedArBehavior’));

45 }

46

47 public static function model($className = CLASS)

48 {

49 return parent::model($className);

50 }

51

52 public function delete()

53 {

54 if (Yum::module()->trulyDelete)

After making some changes, The yii user management started working fine.