I have a simple Product ModelAdmin:

class ProductAdmin extends ModelAdmin{
static $managed_models = array('Product','ProductTopList');
static $url_segment = 'products';
static $menu_title = 'Products';
}

and a very simple product DataObject:
class Product extends DataObject{
static $db = array(
'Name' => 'Text',
'WebAddress' => 'Text'
);
}

Silverstripe in general is behaving very weird and by this I mean when I edit/create page I have to reload the admin to view the changes, but in the product it's even worse because it doesn't create the product. Here is the url that is being sent by ss on create:
"http://exam1/undefined?action_doCreate=Add".