Not likely just you, I would guess that since the rigging advances in P8 could not possibly be supported by P7 your problem is there. I believe SM has stated that the new figures are not backward compatible, I dont see how they possibly could be.

You could perhaps try to import a copy of the Alyson obj into Poser 7 and load one of the P7 rigs into it from the setup room and then adjust the joints.

Life is hard, but what a ride.