I've mentioned this one in the past I think, and it was JUST working fine earlier today, but just now when I clicked on "Invite Players" on the campaign details screen, the email filed is inaccessible. You can still copy the campaign link just fine, but you can't type in an email address to send out an invite. Again, I used it earlier today and it worked fine. I'm on the production server, running Windows 8.1 Pro, Chrome Version 43.0.2357.124 m. No big deal. Just thought I'd report. EDIT: I just went back to the campaign to copy the invite link and the email field is working again...