I have the main program installed at c/program/Smith Micro/Poser Pro 2012 and UAC is active.  I have installed SR1 and all my content is installed in seperate runtimes on another drive.

So far I have no issues with SR1 running on Windows 7 Ultimate 64bit other than a slight change with SSS which seems to have been a quirk with my system as no one else apppears to have had the problem. I have certainly imported a number of .obj files since SR1 and have never had a problem.

 

 

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.