"CDbAuthManager.AuthAssignment" is read only - yii

Question

I just uploaded my website to the cloud. It was working fine on localhost. But it gives me this error in views containing RBAC. I'm not sure why (see code).
I tried changing the model permissions from 644 to 777 for AuthAssignment model to see if that helped. It did not.
The error comes when YII tries to run the "CheckAccess" code in my controller. Error is shown in Line 220 of the code below.
Does anyone know whats going on and what I can do to fix it? Thanks!
CException
Property "CDbAuthManager.AuthAssignment" is read only.
/var/www/vhosts/MYDOMAIN/yii/framework/YiiBase.php(220)
208 {
209 unset($args[0]);
210 $class=new ReflectionClass($type);
211 // Note: ReflectionClass::newInstanceArgs() is available for PHP 5.1.3+
212 // $object=$class->newInstanceArgs($args);
213 $object=call_user_func_array(array($class,'newInstance'),$args);
214 }
215 }
216 else
217 $object=new $type;
218
219 foreach($config as $key=>$value)
220 $object->$key=$value;
221
222 return $object;
223 }
224
225 /**
226 * Imports a class or a directory.
227 *
228 * Importing a class is like including the corresponding class file.
229 * The main difference is that importing a class is much lighter because it only
230 * includes the class file when the class is referenced the first time.
231 *
232 * Importing a directory is equivalent to adding a directory into the PHP include path.

Answer 1

Figured this out. This was a silly mistake. I was trying to solve the issue of RBAC table assignment after uploading to a linux server, and did that wrong. This is the correct way.
//In config/main.php
'authManager'=>array(
'class'=>'CDbAuthManager',
'connectionID'=>'db',
'assignmentTable'=>'authassignment',
'itemTable'=>'authitem',
'itemChildTable'=>'authitemchild',
),