Internal guild error

Hello, did warmane do something in last two days? Now We are unable to invite members to our guild because we are getting this error: Internal guild error.

Edit: I asked other players too. Some guilds are getting same errors, some guilds are fine.

*FACEPALM*

Same problem here - can't invite in guild

A guild member limit of a 1000 was introduced in the latest update, this is the error you'll get when you hit it.

Good to know but we should be informed?
Clearing time...