TTPro 9.6.2 eDrive not showing up as Start Up Drive option

I am not sure when this may have surfaced as I haven't tried to restart into eDrive in a while. Today I removed the eDrive and then recreated it with the latest High Sierra version (10.13.4). I wanted to do a Volume Rebuild via eDrive having the latest macOS. Choosing "Restart eDrive" brings up the System Preferences/Startup Disk pane. There is no eDrive there. There was prior to recreating the eDrive. When I launched TTPro it came up with a dialog to update TTPro, so I did. After the update I went to eDrive and chose "Restart eDrive" - the above preference pane opened showing the eDrive was a version behind on the macOS, so I did the above. Now there is no eDrive there in the Startup Disk pane. The eDrive can mount and does show on the desktop, but restarting with the Option key depressed doesn't show it.

Any ideas?

Thanks in advance.