bluecity I've had the same problem with Build Folder Menus.  But mine is even worse, because I have my very bloated P4 runtime linked (I never bothered to tidy that up with P5, P6 and now P7!) when I get the build folder menus option and select it, Poser crashes.  It works ok if I select each one of the libraries and open them, although it takes time.   I've already reported this over at the content paradise forums but you're the only other person I've seen mention it.  

Oh and it is a P7 bug because P6 has no problem with those huge directories.