I have installed ispconfig3. Ive added a website but when i try to install elgg in /var/www/clients/client1/web5/web/, it fails because file_exists() returns false when looking for the directory /var/www/clients/client1/web5/data/. When i use file_exists() from a php file in the root, it finds the directory. I have changed all the permissions for the parent folders but ist still failing...any ideas??