I don't know what "
You must be registered to see the links
" is, you don't install poses in the game folder, they go in another folder the game creates when you run it the first time.
Don't worry about that now.
Download the game from here:
https://f95zone.to/threads/some-modeling-agency-v0-10-1a-t-valle.84955/
I used the Mega link, it works fine.
Use 7zip to extract that file to it's own folder.
Run the game, make sure it works. Then quit the game.
Then use 7zip to extract Monkey1.8.9, to it's own folder.
Then drag&drop ALL the stuff from inside the Monkey1.8.9 folder, into the game folder.
If it still don't work after following this, then i don't know what else is up.. Maybe post your computer specs, maybe someone else will figure it out.
I hope you get it working.
Edit to add, after I read your post again, if I was you, I would run the windows defender deep scan option. Make sure you update it to current/latest first.