checking in the windows event application event logs, the splunk modular powershell.exe would die.
common logging error
but also my server has a local.meta path issue.
If that happens periodically I would check the Windows Event Logs
What version of the UF? Are there any messages in $SPLUNK_HOME/var/log/splunk/splunkd.log around the time of the failure? What about in the windows event logs?