I did upload using the edit model script. Judas was kind enough to join me in world and he found a few things I did not do. The first was to check the Write Normals box in Blender. He said that without doing this, the textures would not come in. Then I took it through the FBX converter again.
He checked the link I was using to dropbox, and I have an unpaid dropbox account. He found that it did not work for him, unless he clicked on the link, which took him to another page with a much longer url. The longer url did work.
Something fairly small came into world, and I almost did not see it. Judas did see it, and I clicked right and left mouse buttons to scale it up. To my dismay, I had forgotten check the “Selected Only” box in Blender, and everything in that Blender file came in. The file contained a line of church furnishings I had made for Second Life. I wonder though, given the small scale it came in at, if at one point perhaps my candle import did work and there is a tiny, tiny candle out there somewhere that I missed seeing.
Judas was kind enough to point out that it was interesting that all of that stuff (a lot of polys) did not break the sandbox. I observed that it could have been worse, if I had been a maker of adult things and had filled the sandbox with dildoes and other things.
I have had probably just the first of many “Doh” noob moments. I am sure that if there is a way to attach a voxel cube to my head, I will find it.