Featured Image Test.
1. Click on “Set featured image” link.
2. Brings up a modal, in which I select the featured image.
3. Shows featured image in meta box–sometimes, sometimes not.
4. Click update, does not show in post.

Although featured Image doesn’t seem to be working, “Add Media” ( “Insert into page” ) seems to work fine. Below is an image inserted into the page, via the Add Media button, of a screenshot of the Featured Image showing up in the meta box.