@angerawr: Looks like it's fixed because I'm now seeing the captcha when I try to post a reply. Thanks =)

I'm getting this same error when trying to post a reply to a comment under an Assassin's Creed: Origins article. I also got the error when trying to reply to another forum topic about this same problem. I think the problem is there's no captcha displaying when trying to post replies, but there is one underneath this posting a new topic.