Admittedly thinking while feeling feverish is slightly impaired, but it took me a little while to figure this one out… Trying to integrate ZF 1.11 with Doctrine2 to as per this article, I was trying to be a smart-ass and use TS_Resource_EntityManager instead of the ugly looking TS_Resource_Entitymanager.

Unfortunately all this got me was this very unhelpful error:

Zend_Application_Bootstrap_Exception with message Resource 
matching <strong>"entityManager"</strong> not found```

It turns out that although the case of the resource name in the application.ini dosn’t really matter the class name does not like mixed case. So had to settle with **TS_Resource_Entitymanager** as the plugin name.