Property Not Defined

Hello guys, i know this question has been asked at least a thousand times. I can't however find my mistake, so i was wondering if you guys could help me.

I get this error, when posting a form:

CException

Property "SysReq.class" is not defined.

/Applications/XAMPP/xamppfiles/htdocs/YiiRoot1/framework/db/ar/CActiveRecord.php(159)

147      * PHP setter magic method.
148      * This method is overridden so that AR attributes can be accessed like properties.
149      * @param string $name property name
150      * @param mixed $value property value
151      */
152     public function __set($name,$value)
153     {
154         if($this->setAttribute($name,$value)===false)
155         {
156             if(isset($this->getMetaData()->relations[$name]))
157                 $this->_related[$name]=$value;
158             else
159                 parent::__set($name,$value);
160         }
161     }
162 
163     /**
164      * Checks if a property value is null.
165      * This method overrides the parent implementation by checking
166      * if the named attribute is null or not.
167      * @param string $name the property name or the event name
168      * @return boolean whether the property value is null
169      */
170     public function __isset($name)
171     {

Stack Trace
#0	
...
#4	
–  /Applications/XAMPP/xamppfiles/htdocs/gameawake.com/protected/views/game/_form.php(16): CActiveForm->errorSummary(Game, Genre, Platform, SysReq)
11     'enableAjaxValidation'=>false,
12 )); ?>
13 
14     <p class="note">Fields with <span class="required">*</span> are required.</p>
15 
16     <?php echo $form->errorSummary($model,$genre,$platform,$sysReq); ?>
17 
18     <div class="row">
19         <?php echo $form->labelEx($model,'name'); ?>
20         <?php echo $form->textField($model,'name',array('size'=>45,'maxlength'=>45)); ?>
21         <?php echo $form->error($model,'name'); ?>

#5	
...
#8	
–  /Applications/XAMPP/xamppfiles/htdocs/gameawake.com/protected/views/game/create.php(18): CController->renderPartial("_form", array("model" => Game, "genre" => Genre, "platform" => Platform, "sysReq" => SysReq))
13 );
14 ?>
15 
16 <h1>Create Game</h1>
17 
18 <?php echo $this->renderPartial('_form', array('model'=>$model, 'genre'=>$genre, 'platform'=>$platform, 'sysReq'=>$sysReq)); ?>

#9	
...
#13	
–  /Applications/XAMPP/xamppfiles/htdocs/gameawake.com/protected/controllers/GameController.php(89): CController->render("create", array("model" => Game, "genre" => Genre, "platform" => Platform, "sysReq" => SysReq))
84         $this->render('create',array(
85             'model'=>$model,
86             'genre'=>$genre,
87             'platform'=>$platform,
88             'sysReq'=>$sysReq,
89         ));
90     }
91 
92     /**
93      * Updates a particular model.
94      * If update is successful, the browser will be redirected to the 'view' page.

Can you guys give me a hint on what's wrong?