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

[Christian Fries]

The solution that Carsten Bleicker posted here: http://forum.typo3.org/index.php?t=tree&th=208872&goto=729280&#msg_729280
works for Typo3 Flow 2.3.2:

TYPO3:
  Flow:
    object:
      excludeClasses:
        'phpoffice.phpexcel': ['PHPExcel', 'PHPExcel\\.*']

I didn't see that there are two posts with the same topic.