Hi Ed,
here is another issue which doesn’t appear on the Ability demo.
I have a fresh install of WP 3.6.1 with Ability 1.9.1 .
I create a Blog page (Blog template), I add posts and test.
On the Ability one page, clicking on Blog display the posts correctly.
However, when opening the blog page (View all button), it appears empty.
The “Back to blog” button should redirect the blog page itself (not going back to the one page).
It doesn’t seem to be related to permalinks, I tried without.
In the theme options, I seemed to have added blog support correctly.
How to help you find the issue ?
Thanks a lot.