Got this issue when I installed Gargul.

It'd be good to have a warning when people have conflicting add-ons. I have Loot Window in Elv turned off. Not sure what's causing this.

Seems to be a conflict with TSM or Elv though.

Message: Interface\FrameXML\LootFrame.lua:568: attempt to index local 'colorInfo' (a nil value)
Time: Tue Apr 12 16:10:27 2022
Count: 1
Stack: Interface\FrameXML\LootFrame.lua:568: attempt to index local 'colorInfo' (a nil value)
[string "@interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua"]:761: in function <...Ons\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:717>
[string "=[C]"]: ?
[string "@interface\FrameXML\LootFrame.lua"]:568: in function <Inte'9rface\FrameXML\LootFrame.lua:563>
[string "=[C]"]: in function MasterLooterFrame_Show' [string "@Interface\FrameXML\LootFrame.lua"]:98: in function <Interface\FrameXML\LootFrame.lua:24> [string "=[C]"]: in function LootSlot'
[string "Error in: Confirm Loot Roll"]:3: in function <[string "Error in: Confirm Loot Roll"]:1>
[string "=[C]"]: in function xpcall' [string "@Interface\AddOns\WeakAuras\GenericTrigger.lua"]:611: in function <Interface\AddOns\WeakAuras\GenericTrigger.lua:537> [string "@Interface\AddOns\WeakAuras\GenericTrigger.lua"]:747: in function ScanEventsInternal'
[string "@interface\AddOns\WeakAuras\GenericTrigger.lua"]:708: in function `ScanEvents'
[string "@interface\AddOns\WeakAuras\GenericTrigger.lua"]:854: in function <Interface\AddOns\WeakAuras\GenericTrigger.lua:839>

Locals: errMsg = "Interface\FrameXML\LootFrame.lua:568: attempt to index local 'colorInfo' (a nil value)"
isBugGrabber = nil
tsmErrMsg = nil
oldModule = nil
private =

People already get a warning when they have conflicting add-ons (Gogo, RCLC etc). As someone who uses TSM and ElvUI as well I can't help but wonder: did you update both of those add-ons? Also: I don't see any indication of Gargul having anything to do with the error messages so I don't have much to go on at this moment. If you have a way for me to reproduce these errors let me know!

This came up on my 2nd Kara run... a lot, every time I looted anything.

Let me know if I can help troubleshoot.

Message: Interface\FrameXML\LootFrame.lua:568: attempt to index local 'colorInfo' (a nil value)
Time: Wed Apr 13 00:52:49 2022
Count: 20
Stack: Interface\FrameXML\LootFrame.lua:568: attempt to index local 'colorInfo' (a nil value)
[string "@interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua"]:761: in function <...Ons\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:717>
[string "=[C]"]: ?
[string "@interface\FrameXML\LootFrame.lua"]:568: in function <Interface\FrameXML\LootFrame.lua:563>
[string "=[C]"]: in function MasterLooterFrame_Show' [string "@Interface\FrameXML\LootFrame.lua"]:98: in function <Interface\FrameXML\LootFrame.lua:24> [string "=[C]"]: in function LootSlot'
[string "Error in: Confirm Loot Roll"]:3: in function <[string "Error in: Confirm Loot Roll"]:1>
[string "=[C]"]: in function xpcall' [string "@Interface\AddOns\WeakAuras\GenericTrigger.lua"]:611: in function <Interface\AddOns\WeakAuras\GenericTrigger.lua:537> [string "@Interface\AddOns\WeakAuras\GenericTrigger.lua"]:747: in function ScanEventsInternal'
[string "@interface\AddOns\WeakAuras\GenericTrigger.lua"]:708: in function `ScanEvents'
[string "@interface\AddOns\WeakAuras\GenericTrigger.lua"]:854: in function <Interface\AddOns\WeakAuras\GenericTrigger.lua:839>

Locals: errMsg = "Interface\FrameXML\LootFrame.lua:568: attempt to index local 'colorInfo' (a nil value)"
isBugGrabber = nil
tsmErrMsg = nil
oldModule = nil
private =

GogoLoot is gone.

TSM and ElvUI are latest and greatest.

Elv 2.4.2

TSM 4.11.26

When I disable everything but Elv, Gargul, and TSM... no errors.

I run a lot of add-ons though. Tried disabling the obvious culprits, AnnoyingPopupRemover, Leatrix_Plus, and WeakAuras and still got the issue. Dunno, but it happens every time I loot a green or higher when on Master Looter.

AddOns\AdvancedInterfaceOptions
AddOns\AlreadyKnown
AddOns\Announcer
AddOns\AnnoyingPopupRemover
AddOns\ArkInventory
AddOns\ArkInventoryConfig
AddOns\ArkInventoryRules
AddOns\ArkInventoryRules_Example
AddOns\ArkInventorySearch
AddOns\AtlasLootClassic
AddOns\AtlasLootClassic_Collections
AddOns\AtlasLootClassic_Crafting
AddOns\AtlasLootClassic_Data
AddOns\AtlasLootClassic_DungeonsAndRaids
AddOns\AtlasLootClassic_Factions
AddOns\AtlasLootClassic_Options
AddOns\AtlasLootClassic_PvP
AddOns\ATT-Classic
AddOns\Attune
AddOns\AutoOpenItems
AddOns\DBM-AQ20
AddOns\DBM-AQ40
AddOns\DBM-Azeroth
AddOns\DBM-BlackTemple
AddOns\DBM-BWL
AddOns\DBM-Core
AddOns\DBM-GUI
AddOns\DBM-Hyjal
AddOns\DBM-Karazhan
AddOns\DBM-MC
AddOns\DBM-Naxx
AddOns\DBM-Onyxia
AddOns\DBM-Outlands
AddOns\DBM-Party-BC
AddOns\DBM-Party-Classic
AddOns\DBM-Serpentshrine
AddOns\DBM-StatusBarTimers
AddOns\DBM-Sunwell
AddOns\DBM-TheEye
AddOns\DBM-VPVEM
AddOns\DBM-WorldEvents
AddOns\DBM-ZG
AddOns\DBM-ZulAman
AddOns\Details
AddOns\Details_Streamer
AddOns\Details_TinyThreat
AddOns\dismounter-tbc
AddOns\ElvUI
AddOns\ElvUI_OptionsUI
AddOns\Enchanter
AddOns\ExRT
AddOns\Gargul
AddOns\GatherMate2
AddOns\GatherMate2_Data
AddOns\GTFO
AddOns\ItemTooltipProfessionIcons
AddOns\KayrFriendSync
AddOns\Leatrix_Maps
AddOns\Leatrix_Plus
AddOns\Leatrix_Sounds
AddOns\LFGBulletinBoard
AddOns\MBB
AddOns\Memoria
AddOns\MRT
AddOns\NovaInstanceTracker
AddOns\Outfitter
AddOns\PallyPower
AddOns\Pawn
AddOns\Questie
AddOns\RaidBuffTracker
AddOns\RankSentinel
AddOns\ReputationWatcher
AddOns\RestockerTBC
AddOns\RollTrackerClassicZ
AddOns\SimpleTauntAnnounce
AddOns\SimpleTauntAnnounce_Config
AddOns\Talented
AddOns\Talented_Data
AddOns\TFTB
AddOns\ThreatClassic2
AddOns\TidyPlates_ThreatPlates
AddOns\TipTac
AddOns\TipTacItemRef
AddOns\TipTacOptions
AddOns\TrackingEye
AddOns\TradeSkillMaster
AddOns\TradeSkillMaster_AppHelper
AddOns\VendorPrice
AddOns\WeakAuras
AddOns\WeakAurasArchive
AddOns\WeakAurasCompanion
AddOns\WeakAurasModelPaths
AddOns\WeakAurasOptions
AddOns\WeakAurasTemplates
AddOns\WideQuestLog
AddOns\WIM

Found the issue with an old weak aura.

FFS, remember when video games were simple? (=

Which one specifically? Will add it to my knowledgebase ^^