Ok here it what I did: I copied all my runtime poser stuff to the D drive (it was on C the boot drive at first) then I reinstalled everything there after uninstalling everything on the C drive. Poser still didn't work. Then I deleted ALL the remaining poser files on the C drive, and now it works... somehow the poser volume on D was still referencing buggy material that the uninstall forgot to delete... or maybe a virus or something I couldn't find. Anyway, my D drive has more space and I should have put it there in the first place. Thanks for the response though, I'm glad to finally be in the clear.