[TYPO3-english] Error on updating from TYPO3 6.1 to 6.2

[Chris Müller]

Okay, it seems that I found the problem: I am using the Zend OpCache and
after a restart of the Apache webserver the install tool works now.

Am 18.04.2014 15:07, schrieb Chris Müller:
> Hi,
> 
> I want to update my TYPO3 installation from version 6.1.7 to 6.2.1.
> 
> I changed the symlink of typo3_src to the new core, deleted the t3lib
> symlink and called the install tool. I am getting the following error:
> 
> PHP Fatal error:  Undefined class constant 'LOCKING_METHOD_SIMPLE' in
> <removed>/typo3_src-6.2.1/typo3/sysext/core/Classes/Core/ClassLoader.php
> on line 756
> 
> I tried the same with 6.2.0 and got the same error. I don't have a clue
> what to do. I deleted also the typo3temp/Cache/ folder.
> 
> Google only showed me an IRC conversion with this error, but there was
> no answer about it.
> 
> Any hints?
> 
> Regards,
> Chris.
>