"...I get a picture in the library, all the tools say that there is something there, but I have no image in the Poser window itself." If it's supposed to be loading a figure or prop then something's probably wrong either a damaged file or Poser has glitched and needs to be rebooted. I've had that happen before. Even the figure dropdown says the figure's there but it ain't. Can you give an example, listing the files in the .zip and where you have them located in Poser?

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken