we are having the same issue on multiple 2012 syslog servers we setup. Did you ever get a resolution to this issue?
also in the event view we see Event ID 7031
The Kiwi Syslog Server service terminated unexpectedly. It has done this 1 time(s). The following corrective action will be taken in 60000 milliseconds: Restart the service.
We are running 9.4.1.
We also have a couple 2008 r2 syslog servers that are not experiencing this issue.