title: magento + Warning: Illegal string offset 'value'
body: <p>In Payment Methods, when I changed magento store/website then below error message is showing </p>
  
  <blockquote>
    <p>Warning: Illegal string offset 'value'  in \app\code\core\Mage\Adminhtml\Block\System\Config\Form\Field.php on line 111</p>
  </blockquote>
  
  <p>Please help me..</p>