Which is why I think it is related to stuff here....
HKCU\Software\Novell\ZCM\Remote Management\Viewer\History\

As a test....backup and then blow away that folder.....
The Default Key will hold values to use for devices that do not yet have a "History".

Which is why the suggestion is to create a default if it does not exist, populate hextile, and then blow away the other values.
(Technically, you would likely blow away 1st and then create default key for simplicity...)