After installing "sphinx search ultimate", when I goto the config page and select the "sphinx search" panel, I get the following error:
Fatal error: Call to a member function toOptionArray() on a non-object in ../app/code/core/Mage/Adminhtml/Block/System/Config/Form.php on line 464
I've tried some of the tips mentioned on the site here, including ensuring compilation is off.. but no luck.
Can someone help? Have you ever seen this issue when installing a new extension? Ideas on how to troubleshoot?