Single post (permalink) yields blank page

I updated to 3.8, no problems. I wrote a new post, did my usual thing, but couldn’t view it in Preview. Trying to do so just brought up a blank page with a black background (no 404 or errors or anything). I tried publishing it to see if that would clear things up, but no cigar. All my other posts seem to be working normally, and I can see my new post on my home page—it’s just that when I click on the link to the post itself…it’s completely blank.

I tried creating a different new post with a different permalink and different content to see if that would work…and it did, wouldn’t you know. But for some reason the particular post I’m TRYING to publish is getting clogged.

I tried resetting my permalink settings to default then setting them back to my preference (as I saw recommended elsewhere on this forum), but that didn’t help.

Here’s the post in question.

Please help! (Thank you.)