I just updated my server yesterday and things seemed fine until I chose a different option to look at syslogs. Under Alerts & Activity, Syslogs, I get the following view. It shows syslog messages.
server/.../syslog

If I go to My Dashboards, and choose Syslog from the Menu Bar entry, I get the old syslog view with no messages.
server/.../Syslog.aspx

I tried deleting the old website and ran the configuration again but I get the same results. There is a Log Viewer menu option available, but that is for an additional paid option.
server/.../