Attempting to move from XenForo 1.3.4 to 1.5 to get the security updates. I'm trying to run the upgrade script and I'm getting back "An unexpected error occurred. Please try again later." I've tracked the call down to this line in the file - XenForo_Application::initialize($fileDir . '/library', $fileDir); It really seems like this ought to work. The $fileDir that's being pulled correctly identifies the root of the xenforo install. Does anyone have ideas as to why that particular command would fail? Is there an error log that this generates that I can go look at for more information? Any help is appreciated since I'm otherwise shooting in the dark.