Did your upgrade to Zend Framework 1.5 break due to camelCase stuff?
Zend Framework 1.5 migration was not without some problems for me (personally, I had MixedCase which also had problems).
They changed the Zend_Controller rules for mapping URLs to view action functions.
Although the migration is described in the documentation at http://framework.zend.com/manual/en/zend.controller.migration.html#zend.controller.migration.fromoneohtoonefive the description it's not very easy to understand.
A short and clear explanation is at: http://www.nabble.com/AW%3A-Normalizing-action-function-names-p16110540s16154.html
Echos of some of the "surprise" that was felt when developers realized what was done is at: http://www.nabble.com/Re%3A-Normalizing-action-function-names-p16156586s16154.html
(adding this alternate link to the docs for search engines http://framework.zend.com/manual/en/zend.controller.migration.html )
