Well, for me, that's even better, because that's what I'm running: 10.12.6. I was wondering why LeeMoon would have stopped at 10.2.6.

But I'm sorry for EClark1894. I don't know why you can't run Poser on 10.7.5, except that 10.7.5 is an _earlier version of the Mac OS. I think I read that v. 11.3 of Poser runs on the Mac OS from versions 9 through 15. Perhaps that's the issue. But I'm no expert. You should probably check on that. And, if that is the situation, are you able to go up to at least Mac OS version 10.9? I know there are different possibilities regarding which versions of the OS you can run, depending on when your model was produced. It depends on the motherboard, the hardware, the firmware, I think.