I clicked on the link to the GZ object in this thread (AGZ0006JB0), but my screen remained blank. I haven't yet tried other such links, but I doubt that this is a one-off.
OK, I think I worked out what's happening ... for some reason, upper/lower case matters in the last four characters; i.e. AGZ0006JB0 is not a real object, but AGZ0006jb0 is: