A couple of questions. What version of DS are you running? What OS are you running? The “black” rendered objects speak to me of a problem/conflict with your video card, but I’m not an expert. I do know that sometimes with content that is old, or is Poser specific, the material settings aren’t set up properly in DS and that might just take a manual adjustment in the surface tab.
But the fact that you’re having so many crashes makes me think that there might be a problem with your system not being able to run DS. Or it’s entirely possible that you got a corrupted download of DS. That does happen on occasion and not a reflection on the program itself. But until we know what your system OS is and your computer’s specs (and video card), it’s hard to trouble shoot the problem. If you could provide this information, I’m sure you’ll be able to get a more “specific” answer (as opposed to my “shotgun” blast of suggestions. Lol.)