Cynthia,

 I picked up the files - no problem. I am always amazed at what a good photographer can do with a camera. Nice shot.

I performed the same test as you did - and got the same results. As long as there is  16 bit TIF file, the transition next to it gives an exclamation mark in SD or HD. For me the exclamation was bluw in SD and black in HD, but the it still played in HD.

I think the issue is the 16 bit color. I guess Studio doesn't like it. I converted the jpg (8 bit) to an 8 bit TIFF and had no issues with SD or HD. I only have PS Elements, which I don't think can save 16 bit files (or maybe I just don't know how!). But I can open them. So, if you have a way to downconvert the color to 8 bit, you might be able to get it to work.