I always get errors when trying to generate RBAC features in the command window. I tried to search solutions in yii forum but nothing works for me 
exception 'CDbException' with message 'CDbCommand failed to execute the SQL statement: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'teccollab.auth
assignment' doesn't exist. The SQL statement executed was: DELETE FROM `AuthAssignment`' in C:\Users\Haizz\Dropbox\yii\framework\db\CDbCommand.php:354
Stack trace:
#0 C:\Users\Haizz\Dropbox\yii\framework\db\CDbCommand.php(1229): CDbCommand->execute(Array)
#1 C:\Users\Haizz\Dropbox\yii\framework\web\auth\CDbAuthManager.php(557): CDbCommand->delete('AuthAssignment')
#2 C:\Users\Haizz\Dropbox\yii\framework\web\auth\CDbAuthManager.php(547): CDbAuthManager->clearAuthAssignments()
#3 C:\Users\Haizz\Dropbox\yii\teccollab\protected\commands\shell\RbacCommand.php(37): CDbAuthManager->clearAll()
#4 C:\Users\Haizz\Dropbox\yii\framework\cli\commands\ShellCommand.php(130): RbacCommand->run(Array)
#5 C:\Users\Haizz\Dropbox\yii\framework\cli\commands\ShellCommand.php(101): ShellCommand->runShell()
#6 C:\Users\Haizz\Dropbox\yii\framework\console\CConsoleCommandRunner.php(65): ShellCommand->run(Array)
#7 C:\Users\Haizz\Dropbox\yii\framework\console\CConsoleApplication.php(91): CConsoleCommandRunner->run(Array)
#8 C:\Users\Haizz\Dropbox\yii\framework\base\CApplication.php(162): CConsoleApplication->processRequest()
#9 C:\Users\Haizz\Dropbox\yii\framework\yiic.php(33): CApplication->run()
#10 C:\Users\Haizz\Dropbox\yii\teccollab\protected\yiic.php(7): require_once('C:\Users\Haizz\...')
#11 {main}
Here is my config/main.php
'components'=>array(
'user'=>array(
// enable cookie-based authentication
'allowAutoLogin'=>true,
),
// uncomment the following to use a MySQL database
'db'=>array(
'connectionString' => 'mysql:host=localhost;dbname=teccollab',
'emulatePrepare' => true,
'username' => 'root',
'password' => 'root',
'charset' => 'utf8',
),
'authManager'=>array(
'class'=>'CDbAuthManager',
'connectionID'=>'db',
),
'log'=>array(
'class'=>'CLogRouter',
'routes'=>array(
array(
'class'=>'CFileLogRoute',
'levels'=>'error, warning',
),
// uncomment the following to show log messages on web pages
/*
array(
'class'=>'CWebLogRoute',
),
*/
),
),
),
My command:
yiic shell ..\index.php
I’m using Xampp on Windows to run Yii.
Thank for your help.