Got It!
Published February 17, 2015
Figured out (I believe) the issue with the app store. My code was barfing on displaying the chapter price, in a non-US locale. I still couldn't get the bug to exactly manifest, but by changing the locale (in code), I got it to blow up in the same place as the crash report from the app store review. So, here is TotAW displaying a chapter price in pounds.
I found some other places in the code that might have similar issues, and fixed them all.
So, back into app store review, as soon as I do a little more testing, and fix a couple of other minor issues that came up in the meantime.
Geoff