Neil, thanks for the quick response. I'm a WYSIWYG kind of guy, so I wouldn't know how to build a preview app. I'll continue with 2014 until it becomes available in 2015.

I'm not even at the point where I'm viewing this on a Kindle or iPad. I'm trying to get the previewer to work. I have an EPUB previewer with InDesign 2015, but it doesn't even recognize scrollable frames. I have to go back to the 2014 version of InDesign which has the Adobe Viewer application. I don't have a clue how to access the Adobe Viewer with InDesign 2015, and I think that's the problem. Does it even exist?