This looks a lot like something I've had happen maybe a couple of times, ever: all the characters and props come in loaded at the zero position and with all morphs at zero; no textures load; no lights load; the camera's at a zero/default position. And it happens with a big, complex scene.

If that sounds familiar, forget this file, there's nothing you can do to get it back. I think this happens when you're right on the edge of running out of memory, something else maybe kicks in to perform some mundane task on your PC, and chunks of vital data don't get written to the file even though everything seems to have gone OK.

---

Windows 10 x64 Pro - Intel Xeon E5450 @ 3.00GHz (x2)

PoserPro 11 - Units: Metres

Adobe CC 2017