A quote from R Hasletine in another thread although it has been mentioned elsewhere.

"Remember, if manually installing, to run the RuntimeLibraries!DAZDzCreateExPFiles-v4.bat (or Mac equivalent after extracting the files or Poser won't know to load the new morph channels. Also, if you are using Windows Vista or later the content should not be installed to the application folder."

The thread was on a different subject but the above does decribe what to do when V4 is installed manually.  It may not be the solution to your problem but worth knowing I think.

 

 

I use Poser 13 on Windows 11 - For Scene set up I use a Geekcom A5 -  Ryzen 9 5900HX, with 64 gig ram and 3 TB  storage, mini PC with final rendering done on normal sized desktop using an AMD Ryzen Threadipper 1950X CPU, Corsair Hydro H100i CPU cooler, 3XS EVGA GTX 1080i SC with 11g Ram, 4 X 16gig Corsair DDR4 Ram and a Corsair RM 100 PSU .   The desktop is in a remote location with rendering done via Queue Manager which gives me a clearer desktop and quieter computer room.