I've had this happen a few times in the last couple of days. For me it seemed to bug when I got knocked back while going into stealth. Then meter stuck at 95%ish and would not change until zone/relog/respawn.
As far as I can tell it only goes up to level three. The info here says it goes away when the festival finishes: http://neverwinter.gamepedia.com/Midsummer_Provisioning
You're welcome :) I remember they use to have mailbox access from the web site for STO, which is where I'd go to highlight all and delete. Hmmm, *goes and checks the Gateway*, no, cannot select all from there either.
Delete All would be helpful, with warning on attachments of course. What I do is click Delete and hit Enter twice to confirm the warning popup. Repeat.
Thanks herbtrader20. I find this quite intriguing and clever. Though I doubt I'll ever go past 10 toons, this will help supplement my main characters, with minimal effort :)