WowAce

4x Chatter\Modules\EditBox.lua:448: attempt to concatenate local 'chan' (a nil value)
Chatter\Modules\EditBox.lua:448: in function <Chatter\Modules\EditBox.lua:437>
(tail call): ?
FrameXML\ChatFrame.lua:3994: in function `ChatEdit_ResetChatType'
FrameXML\ChatFrame.lua:3975: in function `ChatEdit_OnShow'
[string "*:OnShow"]:1: in function <[string "*:OnShow"]:1>
[C]: in function `Show'
FrameXML\ChatFrame.lua:4033: in function <FrameXML\ChatFrame.lua:4021>
[C]: in function `ChatEdit_ActivateChat'
FrameXML\ChatFrame.lua:3664: in function `ChatFrame_OpenChat'
FrameXML\ChatFrame.lua:3753: in function `ChatFrame_SendSmartTell'
FrameXML\UnitPopup.lua:1607: in function `func'
FrameXML\UIDropDownMenu.lua:935: in function `UIDropDownMenuButton_OnClick'
[string "*:OnClick"]:1: in function <[string "*:OnClick"]:1>

Locals:
self = <table> {
ChatEdit_SetLastActiveWindow = <function> defined @Chatter\Modules\EditBox.lua:399
SetDefaultModuleLibraries = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:398
Enable = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:325
NewModule = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:266
FCF_Tab_OnClick = <function> defined @Chatter\Modules\EditBox.lua:361
EnableModule = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:363
modules = <table> {
}
GetModule = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:241
IterateEmbeds = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:473
SecureHookScript = <function> defined @Ace3\AceHook-3.0\AceHook-3.0.lua:410
defaultModuleLibraries = <table> {
}
RawHookScript = <function> defined @Ace3\AceHook-3.0\AceHook-3.0.lua:395
LibSharedMedia_Registered = <function> defined @Chatter\Modules\EditBox.lua:237
GetName = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:310
GetOptions = <function> defined @Chatter\Modules\EditBox.lua:415
SetAttach = <function> defined @Chatter\Modules\EditBox.lua:490
name = "Chatter_Edit Box Polish"
IsEnabled = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:482
orderedModules = <table> {
}
Decorate = <function> defined @Chatter\Modules\EditBox.lua:282
DisableModule = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:381
baseName = "Chatter"
SetBackdrop = <function> defined @Chatter\Modules\EditBox.lua:419
HookScript = <function> defined @Ace3\AceHook-3.0\AceHook-3.0.lua:366
frames = <table> {
}
SecureHook = <function> defined @Ace3\AceHook-3.0\AceHook-3.0.lua:336
IsHooked = <function> defined @Ace3\AceHook-3.0\AceHook-3.0.lua:493
UnhookAll = <function> defined @Ace3\AceHook-3.0\AceHook-3.0.lua:477
SetBorderByChannel = <function> defined @Chatter\Modules\EditBox.lua:437
IsModule = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:248
db = <table> {
}
SetDefaultModuleState = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:418
ChatEdit_DeactivateChat = <function> defined @Chatter\Modules\EditBox.lua:408
OnDisable = <function> defined @Chatter\Modules\EditBox.lua:368
SetEnabledState = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:455
Hook = <function> defined @Ace3\AceHook-3.0\AceHook-3.0.lua:274
enabledState = true
OnEnable = <function> defined @Chatter\Modules\EditBox.lua:316
OnInitialize = <function> defined @Chatter\Modules\EditBox.lua:256
Disable = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:345
hooks = <table> {
}
SetDefaultModulePrototype = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:440
UpdateHeight = <function> defined @Chatter\Modules\EditBox.lua:605
IterateModules = <function> defined @Ace3\AceAddon-3.0\AceAddon-3.0.lua:468
Info = <function> defined @Chatter\Modules\EditBox.lua:601
RawHook = <function> defined @Ace3\AceHook-3.0\AceHook-3.0.lua:313
Unhook = <function> defined @Ace3\AceHook-3.0\AceHook-3.0.lua:418
moduleName = "Edit Box Polish"
defaultModuleState = true
modName = "Eingabefeld"
}
(for generator) = <function> defined =[C]:-1
(for state) = <table> {
1 = <unnamed> {
}
2 = <unnamed> {
}
3 = <unnamed> {
}
4 = <unnamed> {
}
5 = <unnamed> {
}
6 = <unnamed> {
}
7 = <unnamed> {
}
8 = <unnamed> {
}
9 = <unnamed> {
}
10 = <unnamed> {
}
}
(for control) = 2
index = 2
frame = <unnamed> {
0 = <userdata>
}
f = ChatFrame2EditBox {
0

If you go to line 448 and change "else" to "elseif chan ~= nil then" then it fixes it