http://pastebin.com/rxbcpiy0

I'm running KCauldron + MC 1.7.10

Also, display-chat-tags: false is set, but players still have clan tags before their usernames in chat.

Edit: This error occurs on most clan commands, not just /.

Edit 2: Also getting this error, and messages are being sent in both clan chat and global chat. http://pastebin.com/iTKtch4w

Upgrade to the latest dev version, see if that fixes it.

All fixed, thanks so much <3