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I get the following error when going to
Argument 2 passed to Mage_Core_Model_Config::_makeEventsLowerCase() must be an instance of Mage_Core_Model_Config_Base, instance of Mage_Api_Model_Wsdl_Config_Base given, called in app/code/core/Mage/Core/Model/Config.php on line 960 and defined in app/code/core/Mage/Core/Model/Config.php on line 1647
This happened after I applied the 7405 patch. Any ideas how to solve it?
I know about Security Patch SUPEE-7405 - possible problems? but this question and answers are about listing issues or testing after the patch, not about solving them.