Very strange error, anyone see this before...user gets blank window in Self Service:

The client's /var/log/jamf.log shows:
Thu Jan 26 12:16:20 JDOE-COMPUTER jamf[57]: Exception thrown while trying to send a message to a daemon observer for notification com.jamfsoftware.jamf.jamfAgentRequestEvent: connection went invalid while waiting for a reply because a mach port died
Google brings up a whole lot'a stuff not related to Jamf...
