Zend OpCache in PHP 5.5 compatibilty ? (no replies)

Piwik 1.12
Web Server : IIS 7.5 on Windows Server 2008 R2 SP1
PHP 5.5.2 & MySQL 5.6.13

I updated my PHP today from 5.4.18 to 5.5.2 and everything was ok with my piwik website. Then I enabled Zend OpCache (now included in PHP 5.5 core) using "zend_extension=php_opcache.dll” et “opcache.enable=1” in the php.ini file. And now I have an Application Error in my Windows event log and my piwik Dashboard is not available. I don't have any problem with my regular websites, only piwik dashboard is broken.

Faulting application nam : php-cgi.exe, version : 5.5.3.0, horodatage : 0x5213f894
Faulting module name : php5.dll, version : 5.5.3.0, horodatage : 0x52140684
Exception code : 0xc0000005
Fault offset : 0x00030012
Faulting application path : E:\PHP\php-cgi.exe
Faulting module path : E:\PHP\php5.dll

If a disable Zend OpCache in php.ini (opcache.enable=0), piwik dashboard is back.

I think there is an incompatibility between piwik and php 5.5 when using the opcode cache feature now in php core.