A few but I’m really, really a newbie when it comes to blender. To see how new, look at this thread. I do know one thing you could do, though. If you pop one of the models into a 7zip archive, and as long as that 7z file is less than 4 meg (bound to be isn’t it?), you can drag and drop it into a post. It will then upload to this site and be available for others to download from that post. Then they can see directly if they can get it into Blender and if not, try to figure what’s going on.
TR