I don't think this is related to the prior conversation as that was due to driver certification expired which has since then been fixed.
What specific issue are you seeing and what error is being reported? I am not sure I completely follow the above as to why there should be a reference to HKLM->software->dialogic in this case for 2016 (if that is used)
I know the current SU builds are currently installing to the HKLM->software->wow6432node->dialogic keys as expected and use that for reference of the 32bit apps.
There could be something else missing from the install (underneath which is causing an issue). Need more details in this case to comment further.
Jeff