WowAce

What steps will reproduce the problem?
1.Enable addon
2.Load WoW
3.Open Mail

What is the expected output? What do you see instead?
Opening the inbox without errors.
Blank inbox (there's nothing showing, no money, no mail, while it's there).

What version of the product are you using?
r88-release

Do you have an error log of what happened?
Date: 2012-09-08 15:52:29
ID: 3
Error occured in: Global
Count: 1
Message: ..\AddOns\BetterInbox\BetterInbox.lua line 640:
   attempt to index global 'MailFrameTopLeft' (a nil value)
Debug:
   (tail call): ?
   BetterInbox\BetterInbox.lua:640: SetSendMailShowing()
   BetterInbox\BetterInbox.lua:405: SetupGUI()
   BetterInbox\BetterInbox.lua:120: MAIL_SHOW()
   BetterInbox\BetterInbox.lua:82:
      BetterInbox\BetterInbox.lua:71
   (tail call): ?
   [C]: ?
   [string "safecall Dispatcher[1]"]:9:
      [string "safecall Dispatcher[1]"]:5
   (tail call): ?
   Ace3\AceAddon-3.0\AceAddon-3.0.lua:543: EnableAddon()
   Ace3\AceAddon-3.0\AceAddon-3.0.lua:636:
      Ace3\AceAddon-3.0\AceAddon-3.0.lua:621
   [C]: LoadAddOn()
   AddonLoader\AddonLoader.lua:125: LoadAddOn()
   AddonLoader\AddonLoader.lua:146:
      AddonLoader\AddonLoader.lua:135
   [C]: TurnOrActionStop()
   [string "TURNORACTION"]:4:
      [string "TURNORACTION"]:1

Please provide any additional information below.

BetterOutbox seems to be doing fine though. Must be something changed with Blizz.