Fatal error: Call to a member function setData() on boolean in /app/code/core/Mage/Eav/Model/Config.php on line 651

Combined a Magento 1.9.0. database with a Magento 1.9.4.1. basic installation and get this error:

Fatal error: Call to a member function setData() on boolean in /app/code/core/Mage/Eav/Model/Config.php on line 651

Any ideas ?

Thanks in advance.