Hey. As of today's update for Retail (10.0.2) I'm getting this lua error whenever I load into the game:

1x Interface/AddOns/ls_Toasts/core/core.lua:247: attempt to call global 'IsDressableItem' (a nil value)
[string "@Interface/AddOns/ls_Toasts/core/core.lua"]:247: in function `DressUpLink'
[string "@Interface/AddOns/ls_Toasts/systems/loot_special.lua"]:21: in function <Interface/AddOns/ls_Toasts/systems/loot_special.lua:19>
[string "=[C]"]: ?

Locals:
self =

{
GetScreenQuadrant = defined @Interface/AddOns/ls_Toasts/core/core.lua:151
GetToast = defined @Interface/AddOns/ls_Toasts/core/toast.lua:788
FindToast = defined @Interface/AddOns/ls_Toasts/core/toast.lua:768
RegisterOptions = defined @Interface/AddOns/ls_Toasts/core/system.lua:102
GetItemLevel = defined @Interface/AddOns/ls_Toasts/core/core.lua:217
UnregisterAllCallbacks = defined @Interface/AddOns/Masque/Libs/CallbackHandler-1.0/CallbackHandler-1.0.lua:169
RegisterSkin = defined @Interface/AddOns/ls_Toasts/core/skin.lua:18
CHANGELOG = "- Added an option to show poor quality quality items via common loot toasts. Thanks to Faqar@GitHub.

• Added leaf ornaments to achievement toasts. I can't re-enable Blizz achievement toasts, so as a
  compromise I chose to make achievement toasts more unique. If you want them to stand out even more
  create a separate anchor to display them.
• Fixed an issue where repeatedly testing toasts and flushing the queue would sometimes lock up the
  addon.
• Fixed corrupt beautycase border texture. It worked, but baked-in shadows were messed up.
• Updated Traditional Chinese translation. Translated by BNS333@Curse.
  "
  RegisterCallback = defined @Interface/AddOns/Masque/Libs/CallbackHandler-1.0/CallbackHandler-1.0.lua:85
  VER =

{
}
DressUpLink = defined @Interface/AddOns/ls_Toasts/core/core.lua:241
UnregisterCallback = defined @Interface/AddOns/Masque/Libs/CallbackHandler-1.0/CallbackHandler-1.0.lua:148
RegisterSystem = defined @Interface/AddOns/ls_Toasts/core/system.lua:20
RegisterEvent = defined @Interface/AddOns/ls_Toasts/core/core.lua:56
SearchBagsForItemID = defined @Interface/AddOns/ls_Toasts/core/core.lua:229
UnregisterEvent = defined @Interface/AddOns/ls_Toasts/core/core.lua:78
SanitizeLink = defined @Interface/AddOns/ls_Toasts/core/core.lua:128
}
link = "item:199383::::::::60:267::26:3:6652:7580:8936:1:28:2425:::::"
(*temporary) = nil
(*temporary) = "item:199383::::::::60:267::26:3:6652:7580:8936:1:28:2425:::::"
(*temporary) = "attempt to call global 'IsDressableItem' (a nil value)"
s_split = defined =[C]:-1
C_PetJournal = {
GetPetTeamAverageLevel = defined =[C]:-1
PetIsFavorite = defined =[C]:-1
SetAllPetSourcesChecked = defined =[C]:-1
PetIsHurt = defined =[C]:-1
GetPetInfoBySpeciesID = defined =[C]:-1
PetNeedsFanfare = defined =[C]:-1
PickupSummonRandomPet = defined =[C]:-1
GetNumPetSources = defined =[C]:-1
GetNumPets = defined =[C]:-1
SetPetLoadOutInfo = defined =[C]:-1
SummonRandomPet = defined =[C]:-1
GetPetAbilityList = defined =[C]:-1
ClearSearchFilter = defined =[C]:-1
GetPetInfoTableByPetID = defined =[C]:-1
ReleasePetByID = defined =[C]:-1
PetIsUsable = defined =[C]:-1
FindPetIDByName = defined =[C]:-1
GetBattlePetLink = defined =[C]:-1
SetFavorite = defined =[C]:-1
GetPetModelSceneInfoBySpeciesID = defined =[C]:-1
PetIsRevoked = defined =[C]:-1
GetPetInfoByPetID = defined =[C]:-1
SetAbility = defined =[C]:-1
GetSummonedPetGUID = defined =[C]:-1
GetPetCooldownByGUID = defined =[C]:-1
GetPetStats = defined =[C]:-1
ClearRecentFanfares = defined =[C]:-1
PickupPet = defined =[C]:-1
GetPetSortParameter = defined =[C]:-1
GetDisplayIDByIndex = defined =[C]:-1
IsPetSourceChecked = defined =[C]:-1
SetCustomName = defined =[C]:-1
IsFilterChecked = defined =[C]:-1
IsFindBattleEnabled = defined =[C]:-1
GetNumCollectedInfo = defined =[C]:-1
GetPetSummonInfo = defined =[C]:-1
SetDefaultFilters = defined =[C]:-1
GetNumDisplays = <func

Also I think your addon is causing this lua error, as I tested without it and had no spams. This error happens randomly whenever I log over and/or join a raid group without doing nothing like inspecting another player, opening the achievements tab or else:

4x ...ns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua:702: Usage: GetCategoryNumAchievements(categoryID, includeSuperceded)
[string "=[C]"]: in function GetCategoryNumAchievements' [string "@Interface/AddOns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua"]:702: in function AchievementFrameComparison_UpdateStatusBars'
[string "@Interface/AddOns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua"]:2695: in function <...ns/Blizzard_AchievementUI/Blizzard_AchievementUI.lua:2691>

Locals:
(*temporary) = "summary"