I installed SilverDragon yesterday and immediately started getting this issue when a rare is sighted. Disabling SilverDragon in AddOnSkins solves the error.

Message: ...face/AddOns/AddOnSkins/Skins/AddOns/SilverDragon.lua:13: attempt to index field 'backdrop' (a nil value)
Time: Sat Oct 5 18:03:56 2024
Count: 2
Stack: ...face/AddOns/AddOnSkins/Skins/AddOns/SilverDragon.lua:13: attempt to index field 'backdrop' (a nil value)
[string "@Interface/AddOns/AddOnSkins/Skins/AddOns/SilverDragon.lua"]:13: in function <...face/AddOns/AddOnSkins/Skins/AddOns/SilverDragon.lua:7>
[string "@Interface/AddOns/SilverDragon/targets/popup.lua"]:15: in function ApplyLook' [string "@Interface/AddOns/SilverDragon/targets/popup.lua"]:370: in function <Interface/AddOns/SilverDragon/targets/popup.lua:193> [string "=(tail call)"]: ? [string "=(tail call)"]: ? [string "@Interface/AddOns/Blizzard_SharedXMLBase/Pools.lua"]:45: in function <Interface/AddOns/Blizzard_SharedXMLBase/Pools.lua:37> [string "=(tail call)"]: ? [string "=(tail call)"]: ? [string "@Interface/AddOns/SilverDragon/targets/popup.lua"]:25: in function ShowFrame'
[string "@Interface/AddOns/SilverDragon/targets/queue.lua"]:77: in function ProcessQueue' [string "@Interface/AddOns/SilverDragon/targets/queue.lua"]:68: in function Enqueue'
[string "@Interface/AddOns/SilverDragon/targets/module.lua"]:109: in function ?' ... [string "@Interface/AddOns/SharedMedia/libs/CallbackHandler-1.0/CallbackHandler-1.0.lua"]:54: in function Fire'
[string "@Interface/AddOns/SilverDragon/core.lua"]:627: in function NotifyForMob' [string "@Interface/AddOns/SilverDragon/scan/vignettes.lua"]:303: in function <Interface/AddOns/SilverDragon/scan/vignettes.lua:283> [string "=(tail call)"]: ? [string "@Interface/AddOns/SilverDragon/scan/vignettes.lua"]:279: in function ?'
[string "@Interface/AddOns/SharedMedia/libs/CallbackHandler-1.0/CallbackHandler-1.0.lua"]:109: in function <...dia/libs/CallbackHandler-1.0/CallbackHandler-1.0.lua:109>
[string "=[C]"]: ?
[string "@Interface/AddOns/SharedMedia/libs/CallbackHandler-1.0/CallbackHandler-1.0.lua"]:19: in function <...dia/libs/CallbackHandler-1.0/CallbackHandler-1.0.lua:15>
[string "@Interface/AddOns/SharedMedia/libs/CallbackHandler-1.0/CallbackHandler-1.0.lua"]:54: in function `Fire'
[string "@Interface/AddOns/Ace3/AceEvent-3.0/AceEvent-3.0.lua"]:120: in function <Interface/AddOns/Ace3/AceEvent-3.0/AceEvent-3.0.lua:119>

Locals: self =

{
defaults = {
}
queue = {
}
defaultModuleState = true
stack = {
}
db = {
}
enabledState = true
Looks = {
}
LookConfig = {
}
overflow = {
}
anchor = Frame {
}
defaultModuleLibraries = {
}
name = "SilverDragon_ClickTarget"
orderedModules = {
}
baseName = "SilverDragon"
pools = {
}
LookReset = {
}
modules = {
}
moduleName = "ClickTarget"
}
popup = SilverDragonPopupButton1234 {
glow = Texture {
}
close = SilverDragonPopupButton1234CloseButton {
}
animFade = AnimationGroup {
}
status = FontString {
}
background = Texture {
}
RightEdge = Texture {
}
template = "Transparent"
animIn = AnimationGroup {
}
iborder = Frame {
}
Center = Texture {
}
model = PlayerModel {
}
shine = Texture {
}
BottomEdge = Texture {
}
source = FontString {
}
BottomRightCorner = Texture {
}
PixelSnapDisabled = true
BottomLeftCorner = Texture {
}
TopRightCorner = Texture {
}
TopLeftCorner = Texture {
}
backdropInfo = {
}
scripts = {
}
dead = Texture {
}
oborder = Frame {
}
title = FontString {
}
TopEdge = Texture {
}
lootIcon = Button {
}
raidIcon = Texture {
}
modelbg = Texture {
}
LeftEdge = Texture {
}
}
(*temporary) = nil
(*temporary) = nil
(*temporary) = SilverDragonPopupButton1234CloseButton {
animIn = Alpha {
}
PixelSnapDisabled = true
Texture = Texture {
}
}
(*temporary) = true
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = "attempt to index field 'backdrop' (a nil value)"
S = {
ArrowRotation = {
}
modules = {
}
hooks = {
}
UIScale = 0