Ha! No, but maybe Rod could post a screen shot of iPhone with the version number showing running El Cap? I think he just typo'd on the version number (which I've never done ... <whistles>).
The fundamental problem Northroad is having is that he/she didn't upgrade to Yosemite, and now it is too late. The 9.6.x update was so that iPhoto would work under *Yosemite,* and thus isn't available for Mavericks users.
Read this:
https://discussions.apple.com/thread/6986852?start=0&tstart=0
Bottom line: if you can't get the upgrade from Apple and can't copy over the iPhotos application from someone running Yosemite, you may be out of luck. Mavericks is still supported for another year or two, however, so you can continue to use iPhoto and just stay there for a little while -- your iPhoto library will be gracefully imported into Photos when you get a new machine or upgrade the OS, and contrary to myth the program is 95 percent the same thing as iPhoto, at least in El Capitan (some improvements have been made since the feature-bare 1.0 release). Photos is nothing to be afraid of, and chances are by the time you move over to it you will, after a short period of relearning awkwardness, love it -- since it does nearly everything iPhoto did, but faster and better. Believe me I was VERY VERY reluctant to switch over (and still haven't fully done so), but the more I work with Photos the more obvious it becomes that it is a whiter (not crazy about that), 64-bit modern, faster, and mostly superior version of iPhoto. Aperture people have a reason to be disappointed; iPhoto users largely do not (but are just cranky about the re-arranged furniture, and I get that).