Okay, i setup a debian install with ispconfig3 ,php5-fpm and nginx, the main site, drupal is working fine, even perfect. But i also have a modded phpbb3 board, in a subdir, named 'forum'.

Now for some reason i get the following error from nginx when accesing the dir:

'ERROR 500 - Internal Server Error!'

This is the content of the nginx directiv field(for vhost):

http://pastebin.com/rTacVDSa


I checked the php and nginx logs, nothing in it that suggest an error with php...