If you have a backup and still have to unzip content then either you are backing up the wrong thing or your restore procedure is not right.  I have all of my content in a folder called Poser content on my E drive. Within that folder I have around 40 runtimes and I back up the main Poser Content folder.  To restore I just copy my backup to a drive and the only thing I have had to do in the past is point Poser to each runtime.  I have done this a few times now without problems and the folder has been there since Poser 6 days while growing on a weekly basis.

Don't get me wrong, I am not having a go and I have had have some manic problems with restores, enough to want not to have to do it again. I am really glad you have got it sorted but if you have backed up the data a restore really should be a lot easier than what you have had to go through.

 

 

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.