Two things that probably went wrong... If you have a .dxf file, you must import it to a Poser scene with Poser's import command (you can then save it as a prop, if you like). A "real" prop (.pp2) must go to a subfolder of runtime > libraries > props, where the name of the subfolder will be the library name in Poser. If you have trouble with installing (and even if you don't... :-) you might want to use the Macinstaller tool - it will not only save you from all this trouble, it can also perform some tricks which are unavailable with manual installing at all. Take some time to read my docs before, it explains the options that you will get. The tools are available from: http://www.main-rheiner.de/homepage/soft.rabbit