Default Server Manager landing for View log files arrives at ConsoleKit/history instead of /var/log/messages/current
/var/log/messages is a file, not a directory, and therefore there is (and can be) no /var/log/messages/current. But with that said, my system has all the new updates installed, and though ConsoleKit/history appears in the list (and at the top of the list), the drop-down still defaults to messages (on Firefox 46/Ubuntu 16.04).
I don't think any SME10 packages got pushed through, but if your system is behaving in an unexpected way, filing a bug is usually a good idea.