Well, I didn’t have any Categories and I started to add some and then went to set a category on one of the files that wasn’t found and it and all the others suddenly started working! Strange, but working now.
After looking at this more it appears that any file over about 40MB will not download. Is there a new limit to file size for downloads with the free version? I was able to add a new file that is under that size and it works, but adding any file over that limit and existing files that were over that limit appear to not download.