So I chose the other sets of photos and it worked normally. The link on the webpage was different this time, offering 2 options, to download with full or medium resolution. The zip file went into the correct folder and opened without issue. I still had the same problem with the "Last 56 Photos" when I'd choose "select all" it would give me those same weird choices of MIS and MOV, but if I selected them all individually, it worked fine. Strange. But at least it's working now. Thanks :)