My XF site has stopped working after running an "apt-get dist-upgrade" for my server
Website now returning "An unexpected error occurred. Please try again later." Nothing more in page source.
MySQL is running fine, can connect via console cli
Nginx is working, a test static/html site works.
phpinfo(); works, returning normal and mysqld.sock pointing to the correct path/file
nginx log shows no errors, and php5-fpm log shows no errors too.
What else should I be checking?