Specific problem with comment form 404

Okay, bear with me here. I’ll give the long version of the story for clarity’s sake, but bold the exact problem right at the end:

I had a single-install of WordPress for a webcomic, and it was installed in a subfolder called “Comfort” (the name of the comic).
I then decided that I wanted a multisite, so that I could have several webcomics on one install.
I converted my single install into a multisite, but didn’t like that now the network would be called “Comfort”, since that wouldn’t be indicative of all the other webcomics to follow. For example, the next comic (“Resolve”) would be /comfort/resolve – not something like /webcomics/resolve, which would make more sense.
So, I re-named the WordPress install folder to “Webcomics” and made as many changes in the database as I was able to. (I then also made a copy of “Comfort”, put that inside the Webcomics network, and made the index page of the network into a directory for “Comfort” and other/future webcomics I will be hosting, like “Resolve”.)

Everything went smoothly except for one thing:
The comment submission form across all my themes is calling to the wrong url. Rather than calling to “webcomics/wp-comments-post.php” it’s still trying to call to “comfort/wp-comments-post.php”, using the old folder name. How can I fix this?

Here’s the exact error message when submitting a comment:

Not Found

The requested URL /comfort/wp-comments-post.php was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Thanks!