<Skillet-5.18)>
Have used Skillet for years, until Dragonflight. Waited till today to give it another shot and no joy.
As soon as any profession is opened, this pops up...

Message: Interface/AddOns/Skillet/UI/MainFrame.lua:175: attempt to call method 'SetGradientAlpha' (a nil value)
Time: Sun May 28 17:32:24 2023
Count: 6
Stack: Interface/AddOns/Skillet/UI/MainFrame.lua:175: attempt to call method 'SetGradientAlpha' (a nil value)
[string "@Interface/AddOns/Skillet/UI/MainFrame.lua"]:175: in function CreateTradeSkillWindow' [string "@Interface/AddOns/Skillet/Skillet.lua"]:932: in function SkilletShow'
[string "@Interface/AddOns/Skillet/Skillet.lua"]:805: in function ?' [string "@Interface/AddOns/Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua"]:114: in function <...Ons/Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua:114> [string "=[C]"]: ? [string "@Interface/AddOns/Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua"]:24: in function <...Ons/Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua:20> [string "@Interface/AddOns/Ace3/CallbackHandler-1.0/CallbackHandler-1.0.lua"]:59: 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>
[string "=[C]"]: in function UseAction' [string "@Interface/FrameXML/SecureTemplates.lua"]:364: in function handler'
[string "@Interface/FrameXML/SecureTemplates.lua"]:690: in function <Interface/FrameXML/SecureTemplates.lua:672>
[string "@Interface/FrameXML/SecureTemplates.lua"]:704: in function <Interface/FrameXML/SecureTemplates.lua:697>
[string "@Interface/FrameXML/SecureTemplates.lua"]:746: in function `SecureActionButton_OnClick'
[string "@Interface/FrameXML/ActionButton.lua"]:1161: in function <Interface/FrameXML/ActionButton.lua:1131>
[string "=[C]"]: ?

Locals: self =

{
DeleteIgnoreEntry = defined @Interface/AddOns/Skillet/UI/IgnoreList.lua:159
RecipeGroupPruneList = defined @Interface/AddOns/Skillet/RecipeGroups.lua:487
SkillButton_NewGroup = defined @Interface/AddOns/Skillet/UI/MainFrame.lua:2056
modules = {
}
CancelTimer = defined @Interface/AddOns/Ace3/AceTimer-3.0/AceTimer-3.0.lua:147
ClearQueue = defined @Interface/AddOns/Skillet/SkilletQueue.lua:151
RecipeGroupAddSubGroup = defined @Interface/AddOns/Skillet/RecipeGroups.lua:168
SkillButton_OnDragStop = defined @Interface/AddOns/Skillet/UI/MainFrame.lua:1921
TradeButtonAdditional_OnEnter = defined @Interface/AddOns/Skillet/UI/MainFrame.lua:579
RecipeGroupConstructDBString = defined @Interface/AddOns/Skillet/RecipeGroups.lua:463
QueueAppendCommand = defined @Interface/AddOns/Skillet/SkilletQueue.lua:49
tradeSkillOpen = false
DeleteQueue = defined @Interface/AddOns/Skillet/SkilletQueue.lua:597
FormatMoneyShort = defined @Interface/AddOns/Skillet/FormatMoney.lua:180
DisplayShoppingList = defined @Interface/AddOns/Skillet/UI/ShoppingList.lua:1127
MerchantBuyButton_OnEnter = defined @Interface/AddOns/Skillet/UI/MerchantWindow.lua:284
ShowQueueView = defined @Interface/AddOns/Skillet/UI/MainFrame.lua:3258
QueueAllItems = defined @Interface/AddOns/Skillet/SkilletQueue.lua:332
adjustInventory = false
TRACE_COLOR = ""
NewModule = defined @Interface/AddOns/Ace3/AceAddon-3.0/AceAddon-3.0.lua:231
SKILL_LINES_CHANGED = defined @Interface/AddOns/Skillet/Skillet.lua:756
SetSelectedTrade = defined @Interface/AddOns/Skillet/Skillet.lua:1276
CreateStandaloneQueueFrame = defined @Interface/AddOns/Skillet/UI/MainFrame.lua:3308
FilterDropDown_OnShow = defined @Interface/AddOns/Skillet/UI/Filtering.lua:34
AddToQueue = defined @Interface/AddOns/Skillet/SkilletQueue.lua:103
hideTrivialRecipes = false
dataSourceChanged = false
SetTradeSkillLearned = defined @Interface/AddOns/Skillet/SkilletData.lua:1136
guildbankQueryComplete = defined @Interface/AddOns/Skillet/UI/ShoppingList.lua:459
UpdateMerchantFrame = def

While you say you are using 5.18, the traceback line numbers do not correspond with the sources for that version. Please download Skillet-5.18, verify the MD5 sum, and install it again.

Let me know if you still have an issue.

You were correct. I guess I never deleted the old versions (had three separate versions/folders?) Once I did that and installed the version posted, it works fine.

Thanks for the help!