if your not being prompted for lost files, then, since poser seems to know where they are, i would turn to the computer itself... what windows are you running? and what service pack? 1bg of ram is great... what kind is it? are you running a p3 or p4 - which processor amd or intel? im getting the impression it may just be a memory or processing issue/bug virus in the 'add-on' ((unless it worked before under the same system conditions))