[Flow] Get an 404 error after switching to "production"-context

[Christian Fries]

Quote: Bastian Waidelich (bwaidelich) wrote on Wed, 04 March 2015 16:25
----------------------------------------------------
> TYPO3:
>    Flow:
>      object:
>        excludeClasses:
>          'phpoffice/phpexcel' : ['.*']
> 
> see 
> http://docs.typo3.org/flow/TYPO3FlowDocumentation/2.3/TheDefinitiveGuide/PartIII/PackageManagement.html#using-3rd-party-packages

I have the same problem and I added this to my configuration but without success, I still get the message:

PHP Fatal error:  Cannot redeclare class PHPExcel_Autoloader in /Project/Packages/Libraries/phpoffice/phpexcel/Classes/PHPExcel/Autoloader.php on line 47

Any other ideas?
@Mira: Did you find a solution?