Date: 2017-09-01 21:22:48
ID: 1
Error occured in: Global
Count: 1
Message: ...s\Bagnon\external\Wildpants\components\frameBase.lua line 17:
Usage: PlaySound(soundKitID, optional["SFX","Music","Ambience", "Dialog" or "Master"], [forceNoDuplicates, runFinishCallback])
Debug:
[C]: PlaySound()
...s\Bagnon\external\Wildpants\components\frameBase.lua:17: OnShow()
...s\Bagnon\external\Wildpants\components\inventory.lua:12:
...s\Bagnon\external\Wildpants\components\inventory.lua:11
[C]: Show()
..\FrameXML\UIParent.lua:2928: ShowUIPanel()
...ace\AddOns\Bagnon\external\Wildpants\core\frames.lua:54:
...ace\AddOns\Bagnon\external\Wildpants\core\frames.lua:50
(tail call): ?
(tail call): ?
...s\Bagnon\external\Wildpants\features\autoDisplay.lua:117: ToggleBackpack()
[string "TOGGLEBACKPACK"]:1:
[string "TOGGLEBACKPACK"]:1
Locals:
(*temporary) = "igBackPackOpen"

Or use https://wow.curseforge.com/projects/playsound-temporal-fix to fix it for all addons (read description tho).

Did you try downloading the following zipped up fix for this from the Project Issue #585:

Bagnon_73_Ready.zip