I have finally been able to bring in mesh models using the Amazon AWS S3 bucket. At the last meeting, someone pointed out a problem with that. Every time someone looks at or views your model, it uses bandwidth at Amazon which is tracked and limited with the free basic account. If enough people look at it, you might receive a surprise charge against your “free” account. After hearing that at the last meeting, I took down my mesh files from the AWS S3 bucket. Now that I know my .fbx conversions are fine, I will tackle the problem of why they were not working when I put them on my own paid web space. I think it has something to do with public files and permissions settings. If I get stuck, my web space provider will help me figure it out (Bluehost).
There is another issue that needs to be considered. I noticed when using the mesh import script that the box is automatically filled with the last model url uploaded by anyone. On one occasion I did not look at it closely, just assuming it was my model url, and it uploaded a small rocket ship belonging to someone else. In the scrolling log window behind the view window, it also listed urls for models uploaded by anyone else in world at the moment.
We are a small group of alphas, and I think we are all pretty trustworthy. As more people come in, one needs to be aware that anything you upload can be seen by someone else, who could go to that url and download a copy of that model to their computer. From there they could manipulate it and use it as they wish.
I will cautiously continue to experiment to further the alpha, but I don’t think I will bring in anything that I have invested hours or days of work in. I know these are early days, and these issues will be resolved over time.