After updating to version 6.1.0 I am no longer able to open the bags of bagnon.
When opening (using ke< binding) I get the following error:

[string "BAGNON_TOGGLE"]:1: attempt to call method 'ToggleFrame' (a nil value)
[string "BAGNON_TOGGLE"]:1: in function <[string "BAGNON_TOGGLE"]:1>

On loading I also get an error:

...nterface\AddOns\Ace3\AceLocale-3.0\AceLocale-3.0-6.lua:134: in function `GetLocale'
Interface\AddOns\Bagnon\components\bagToggle.lua:7: in main chunk
Interface\AddOns\Bagnon\components\bagToggle.lua:7: Usage: GetLocale(application[, silent]): 'application' - No locales registered for 'Bagnon'

I also cannot open any kind of addon configuration. No keyboard mapping and no configuration via the addon configuration. /bgn does not do anything also.

If I can provide any further information to help solving this issue,let me know.

I could solve the problem by updating Bagnon accordingly.
The error I made: I updated all my addons while WoW was running. This usually works fine but did not this time.
After restarting WoW Bagnon works.