This article provides a solution to the error occurred while accessing Payment methods section in Magento admin panel.
Problem:
In Magento admin, I tried to go to a configuration settings page, System -> Configuration -> SALES -> Payment Methods
and it showed the following fatal error:
Fatal error: Call to a member function toOptionArray() on boolean … includes/src/Mage_Adminhtml_Block_System_Config_Form.php on line 463
Solution:
The following two steps should solve this error.
1) Disable Compilation from
System -> Tools -> Compilation
2) Refresh Cache fromSystem -> Cache Management
Hope this helps.
Thanks.