The first time I tried after logging in I got the error below. After that, I hear the sound but don't see the bags.

Date: 2011-04-17 17:42:38
ID: 2
Error occured in: Global
Count: 1
Message: ..\AddOns\Bagnon\components\item.lua line 27:
attempt to call method 'GetDummyBag' (a nil value)
Debug:

Bagnon\components\item.lua:27:
Bagnon\components\item.lua:24
(tail call): ?
Bagnon\components\itemFrame.lua:246: AddItemSlot()
Bagnon\components\itemFrame.lua:330: ReloadAllItemSlots()
Bagnon\components\itemFrame.lua:189: UpdateEverything()
Bagnon\components\itemFrame.lua:441: SetFrameID()
Bagnon\components\itemFrame.lua:37: New()
Bagnon\components\frame.lua:719: CreateItemFrame()
Bagnon\components\frame.lua:729: PlaceItemFrame()
Bagnon\components\frame.lua:451: Layout()
Bagnon\components\frame.lua:243: UpdateLook()
Bagnon\components\frame.lua:193:
Bagnon\components\frame.lua:189

Bagnon\components\frame.lua:77: action()
Bagnon\utility\ears.lua:29: SendMessage()
Bagnon\components\frameSettings.lua:51: SendMessage()
Bagnon\components\frameSettings.lua:69: Show()
Bagnon\components\frameSettings.lua:89: Toggle()
Bagnon\main.lua:131: ToggleFrame()
Bagnon\main.lua:171: ToggleBackpack()

  [string "TOGGLEBACKPACK"]:1

Do you happen to also be running Combuctor?

Nope. I couldn't figure out how to highlight all the text in the error, so sorry about that. I also run Auctioneer, Enchantrix, Feed-O-Matic, Lightheaded, TomTom, and XtoLevel. And my original message meant to say that the first time I try to open my bags with the B button, I get the error. Once I dismiss the error and try again, I can hear the opening sound but see no bags. Thank you!

My only suggestion I have is to remove all bagnon folders and reinstall the addon. The error indicates that well, something is missing :)