CiviCRM Community Forums (archive)

This took me a while so posting in case others are looking. There's a bug in php on windows for at least 5.3.9 and 5.3.10 where it will crash apache if it needs to load a file with a size that is a multiple of 4096 bytes. In my case it was a civi 3.3 install where CRM/Event/PseudoConstant.php is 8192 bytes.

The simple workaround is to edit the file.