by Matthew Davidson.
I'm not in charge of the servers, so I can't push things through as I would like, but as I understand it we are running CentOS7 and the latest version in that distribution is 0.5. I'm working on getting them to push 0.7 to the servers, but it isn't really up to me.
We found that a code change that had been made to mod/assign/locallib.php was overwriting the 3.1 version with a version built with Moodle 3.0. So all is well now. As usual, human error.