My zimbra desktop is not starting properly. Just see the three symbols repeating.

When I try downloading the newest desktop and start the upgrade process, it tells me a zimbra desktop background process is still running and to stop it, then restart the upgrade. However, I can't find any background process zimbra desktop might be associated with in the process table and I get the message even after rebooting.

Obviously, the background process the upgrade installer finds is also preventing the z desktop from initializing.

Can anyone point me in the proper direction to correct this?