As follow-up, I note that, in the registry, current user and local machine both have settings for Fences that reference the current version; however, Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Misc\has setting for Fences2 and Groupy in addition to Fences4 and Groupy2. In general, there appears to be a lot of references throughout the registry to Object Desktop products that haven't been running on this machine in years (e.g. WindowsBlinds 5!), rather as if uninstalls and upgrades may have not always been too great at cleaning up after themselves. Anyway, I will rename these nodes and see what happens.
End of sbell's quote
There are relevant registry entries, for various SD products, that would appear to be old but are not. For example, all of Start10 and 11s registry settings are in Start8. One reason they are kept that way is so that when upgrading, its not an uninstall (old) \ install new.
That is not to say that some may be old and unused; just letting you know that not all are.
Sean Drohan
Stardock Product Lifecycle Manager