Some shows in directories named “Show Name, the” not being picked up

I recently switched from a custom-built Linux HTPC right down to a Raspberry Pi 3 running OSMC. My media collection hasn’t changed at all — it’s all living on NAS and accessed via NFS.

I was using the TVDB scraper before and still am now, but likely different versions. For some reason certain shows which were fine before are not being picked up on the new hardware. The ones I’ve noticed so far are the Simpsons, the IT Crowd, and the Walking Dead.

Oddly, there are messages in the log about the Walking Dead and the IT Crowd, but nothing at all about the Simpsons. The messages I see are:

Code:
WARNING: No information found for item '/mnt/nas/media/video/shows/IT Crowd, the/', it won't be added to the library.
WARNING: No information found for item '/mnt/nas/media/video/shows/Walking Dead, the/', it won't be added to the library.

Other shows in directories titled the same way, such as “Event, the”, “Big Bang Theory, the”, “Last Man on Earth, the”, are being picked up just fine.

Inside the directories files are all named in much the same way.

Any idea what could be wrong? I’d rather not rename the directories if I can avoid it.