Development to live got error

I have just developed an yii powered site in my local machine so there are no error at all and everything seems to be ready to go live when gone to live server got an error as below

Fatal error: Cannot redeclare class CInlineAction in /home/misticos/public_html/yii/framework/web/actions/CInlineAction.php on line 23

local server

Zend Server CE

PHP Version 5.3.8

live server

Centos 5

PHP 5.3.10

The problem was with Mod Security deleted the rule bellow now it works although, I am curious as to why this rule is triggering.

Access denied with code 501 (phase 2). Match of “rx ^((?:(?:POS|GE)T|OPTIONS|HEAD))$” against “REQUEST_METHOD” required. [file “/usr/local/apache/conf/modsec2.user.conf”] [line “38”] [id “960032”] [msg “Method is not allowed by policy”] [severity “CRITICAL”] [tag “POLICY/METHOD_NOT_ALLOWED”]