I can’t add the thirteenth (and final) episode either, I get: Error Tv series is invalid Tv season is invalid.

Update: So, it looks like I can’t edit anything for this series. :(

This is very strange.

According to a previous report, no primary facts can be edited because it gives a "Homepage in invalid" error. Another report says uploading images gives an error according to this report, and now, according to your reports, trying to add videos gives a "Media is invalid" and trying to addnew episodes gives "Tv series is invalid" and "Tv season is invalid" errors.

It seems the entry can't be edited at all because everything appears to gives an error of some kind which doesn't make any sense since this appears to be a perfectly fine entry. I've reported all errors internally to see if Travis or someone else can figure out why that is.

This seems similar, if that helps.

These is (at least) one more : https://www.themoviedb.org/tv/211093/discuss/63b4bb19875d1a007d6ff29e

Well that was quick! Everything seems to work fine now. Thanks!