I was wondering if it were something to do with Win 8. I remember encountering a terrible problem trying to install Vue a couple of years ago and it ended up being a Windows 7 thing. I was googling for a Windows 8 issue and didn't find one. I had previously installed poser on this OS with no problems, but of course there are all these updates that have been done and I am wondering if an update to my OS could be a problem somehow. 

"People who attempt define what art is or is not, are not artists"---Luminescence