PlaySound()

[liquidbase]

Hi there!

At the moment I work on the current version of DuffedUI to make it ready for 7.3.
I had a weird problem with PlaySound(). The line in my code ist correctly written and worked well on Live-Server but on PTR I get the following error-message:

1x DuffedUI\modules\loot\bags.lua:691: Usage: PlaySound(soundKitID, optional["SFX","Music","Ambience", "Dialog" or "Master"], [forceNoDuplicates, runFinishCallback])
[C]: in function `PlaySound'
DuffedUI\modules\loot\bags.lua:691: in function `CloseAllBags'
DuffedUI\modules\loot\bags.lua:711: in function `ToggleBags'
DuffedUI\modules\loot\bags.lua:785: in function `ToggleAllBags'
DuffedUI\modules\loot\bags.lua:794: in function `Enable'
DuffedUI\modules\loot\bags.lua:800: in function <DuffedUI\modules\loot\bags.lua:799>

Locals:
(*temporary) = "igBackPackClose"

The line in my bag-code looks like this one:

function Bags:CloseAllBags()
    if MerchantFrame:IsVisible() or InboxFrame:IsVisible() then return end
    CloseAllBags()
    PlaySound("igBackPackClose")
end

Soundfile is correct and the channel is not necessary because it is missing the client uses the master-channel. Anyone have the same issue or an idea how I can fix this?

greetz liquid