tons of LUA from backdrops..

[Fleymour]

1606x ...faceAddOnSkins/SkinsSilverDragon.lua:13: attempt to index field 'backdrop' (a nil value)
[string "@AddOnSkins/SkinsSilverDragon.lua"]:13: in function <...faceAddOnSkins/SkinsSilverDragon.lua:7>
[string "@SilverDragon/targets/popup.lua"]:15: in function ApplyLook' [string "@SilverDragon/targets/popup.lua"]:364: in function <SilverDragon/targets/popup.lua:188> [string "=(tail call)"]: ? [string "@SharedXML/Pools.lua"]:116: in function <SharedXML/Pools.lua:106> [string "=(tail call)"]: ? [string "@SilverDragon/targets/popup.lua"]:25: in function ShowFrame'
[string "@SilverDragon/targets/queue.lua"]:74: in function ProcessQueue' [string "@SilverDragon/targets/queue.lua"]:65: in function Enqueue'
[string "@SilverDragon/targets/module.lua"]:96: in function ?' [string "@ElvUI_Libraries/Core/CallbackHandler-1.0-8/CallbackHandler-1.0.lua"]:109: in function <...ies/Core/CallbackHandler-1.0/CallbackHandler-1.0.lua:109> [string "=[C]"]: ? ... [string "@ElvUI_Libraries/Core/CallbackHandler-1.0-8/CallbackHandler-1.0.lua"]:54: in function Fire'
[string "@SilverDragon/core.lua"]:454: in function NotifyForMob' [string "@SilverDragon/scan/vignettes.lua"]:301: in function <SilverDragon/scan/vignettes.lua:281> [string "=(tail call)"]: ? [string "@SilverDragon/scan/vignettes.lua"]:277: in function ?'
[string "@Ace3/CallbackHandler-1.0-8/CallbackHandler-1.0.lua"]:114: in function <...Ons/Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua:114>
[string "=[C]"]: ?
[string "@Ace3/CallbackHandler-1.0-8/CallbackHandler-1.0.lua"]:24: in function <...Ons/Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua:20>
[string "@Ace3/CallbackHandler-1.0-8/CallbackHandler-1.0.lua"]:59: in function `Fire'
[string "@Ace3/AceEvent-3.0-4/AceEvent-3.0.lua"]:120: in function <Ace3/AceEvent-3.0/AceEvent-3.0.lua:119>

Locals:
self =

{
defaults = {
}
Point = defined @SilverDragon/targets/module.lua:145
Marked = defined @SilverDragon/targets/module.lua:153
SeenLoot = defined @SilverDragon/targets/module.lua:128
CreateAnchor = defined @SilverDragon/targets/module.lua:254
RefreshLootData = defined @SilverDragon/targets/popup.lua:98
IterateEmbeds = defined @Ace3/AceAddon-3.0/AceAddon-3.0.lua:438
EnumerateActive = defined @SilverDragon/targets/queue.lua:39
SendLinkToMob = defined @SilverDragon/targets/module.lua:213
GetGeneralID = defined @SilverDragon/targets/module.lua:161
SetDefaultModulePrototype = defined @Ace3/AceAddon-3.0/AceAddon-3.0.lua:405
queue = {
}
defaultModuleState = true
IsEnabled = defined @Ace3/AceAddon-3.0/AceAddon-3.0.lua:447
stack = {
}
DisableModule = defined @Ace3/AceAddon-3.0/AceAddon-3.0.lua:346
RegisterLookConfig = defined @SilverDragon/targets/config.lua:184
RegisterMessage = defined @Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua:85
UnregisterMessage = defined @Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua:148
AnnounceLoot = defined @SilverDragon/targets/module.lua:100
db = {
}
CanPoint = defined @SilverDragon/targets/module.lua:141
SetEnabledState = defined @Ace3/AceAddon-3.0/AceAddon-3.0.lua:420
ShowFrame = defined @SilverDragon/targets/popup.lua:23
enabledState = true
Looks = {
}
LookConfig = {
}
SetModel = defined @SilverDragon/targets/popup.lua:134
IterateModules = defined @Ace3/AceAddon-3.0/AceAddon-3.0.lua:433
overflow = {
}
Acquire = defined @SilverDragon/targets/queue.lua:23
ResetLook = defined @SilverDragon/targets/popup.lua:18
GetPopupLookPool = defined @SilverDragon/targets/queue.lua:8
IsModelBlacklisted = defined @SilverDragon/targets/popup.lua:166
OnInitialize = defined @SilverDragon/targets/module.lua:49
NewModule = defined @Ace3/AceAddon-3.0/AceAddon-3.0.lua:231
RefreshMobData = defined @SilverDragon/targets/popup.lua:86
UpdateWithData = defined @SilverDragon/targets/queue.lua:98
anchor = Frame {
}
defaultModuleLibraries = {
}
Reflow = defined @SilverDragon/targets/queue.lua:113
GetName = defined @Ace3/AceAddon-3.0/AceAddon-3.0.lua:275
Redraw = defined @SilverDragon/targets/queue.lua:131
name = "SilverDragon_ClickTarget"
Release = defined @SilverDragon/targets/queue.lua:27
orderedModules = {
}
Announce = defined @SilverDragon/targets/module.lua:65
Disable = defined @Ace3/AceAddon-3.0/AceAddon-3.0.lua:310
GetPositionFromData = defined @SilverDragon/targets/module.lua:236
ApplyLook = defined @SilverDragon/targets/popup.lua:13
ProcessQueue = defined @SilverDragon/targets/queue.lua:69
baseName = "SilverDragon"
pools = {
}
RegisterConfig = defined @SilverDragon/targets/config.lua:11
CreatePopup = defined @SilverDragon/targets/popup.lua:188
IsModule = defined @Ace3/AceAddon-3.0/AceAddon-3.0.lua:213
SizeModel = defin

[Fleymour]

posted this originally at silverdragon github.. but they said its bug from addonskins:
kemayo/wow-silverdragon#243 (comment)