20x ...Ons/ProjectAzilroka/Modules/SquareMinimapButtons.lua:186: attempt to index field 'Tracking' (a nil value)
[string "@ProjectAzilroka/Modules/SquareMinimapButtons.lua"]:186: in function `?'
[string "@ElvUI_Libraries/Core/Ace3/AceTimer-3.0-17/AceTimer-3.0.lua"]:55: in function <...UI_Libraries/Core/Ace3/AceTimer-3.0/AceTimer-3.0.lua:50>

Locals:
self =

{
SetDefaultModuleLibraries = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:363
EnableModule = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:328
modules = {
}
CancelTimer = defined @ElvUI_Libraries/Core/Ace3/AceTimer-3.0/AceTimer-3.0.lua:147
IterateEmbeds = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:438
SecureHookScript = defined @ElvUI_Libraries/Core/Ace3/AceHook-3.0/AceHook-3.0.lua:409
RawHookScript = defined @ElvUI_Libraries/Core/Ace3/AceHook-3.0/AceHook-3.0.lua:394
SetDefaultModulePrototype = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:405
defaultModuleState = true
IsEnabled = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:447
ScheduleTimer = defined @ElvUI_Libraries/Core/Ace3/AceTimer-3.0/AceTimer-3.0.lua:94
DisableModule = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:346
Authors = "Azilroka Sinaris Omega Durc"
RegisterMessage = defined @BigWigs/Libs/CallbackHandler-1.0/CallbackHandler-1.0.lua:80
UnregisterMessage = defined @BigWigs/Libs/CallbackHandler-1.0/CallbackHandler-1.0.lua:143
Update = defined @ProjectAzilroka/Modules/SquareMinimapButtons.lua:385
IsHooked = defined @ElvUI_Libraries/Core/Ace3/AceHook-3.0/AceHook-3.0.lua:492
db = {
}
SetEnabledState = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:420
Hook = defined @ElvUI_Libraries/Core/Ace3/AceHook-3.0/AceHook-3.0.lua:273
enabledState = true
RegisterEvent = defined @BigWigs/Libs/CallbackHandler-1.0/CallbackHandler-1.0.lua:80
IterateModules = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:433
Title = "|cFF16C3F2Square|r |cFFFFFFFFMinimap Buttons|r"
RawHook = defined @ElvUI_Libraries/Core/Ace3/AceHook-3.0/AceHook-3.0.lua:312
isEnabled = true
Bar = SquareMinimapButtonBar {
}
UnlockButton = defined @ProjectAzilroka/Modules/SquareMinimapButtons.lua:84
Enable = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:290
UnregisterAllEvents = defined @BigWigs/Libs/CallbackHandler-1.0/CallbackHandler-1.0.lua:164
GetModule = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:206
defaultModuleLibraries = {
}
TimeLeft = defined @ElvUI_Libraries/Core/Ace3/AceTimer-3.0/AceTimer-3.0.lua:172
HandleBlizzardButtons = defined @ProjectAzilroka/Modules/SquareMinimapButtons.lua:98
ScheduleRepeatingTimer = defined @ElvUI_Libraries/Core/Ace3/AceTimer-3.0/AceTimer-3.0.lua:129
Buttons = {
}
GetName = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:275
GetOptions = defined @ProjectAzilroka/Modules/SquareMinimapButtons.lua:460
RemoveTexture = defined @ProjectAzilroka/Modules/SquareMinimapButtons.lua:63
Initialize = defined @ProjectAzilroka/Modules/SquareMinimapButtons.lua:528
orderedModules = {
}
Disable = defined @ElvUI_Libraries/Core/Ace3/AceAddon-3.0/AceAddon-3.0.lua:310
Description = "Minimap Button Bar / Minimap Button Skinning"
HookScript = defined @ElvUI_Libraries/Core/Ace3/AceHook-3.0/AceHook-3.0.lua:365
Hider = Frame {
}
baseName = "ProjectAzilroka"
IsModule = defined @interface

It seems any references to _G.MinimapCluster.Tracking need to be updated to _G.MinimapCluster.TrackingFrame.

works like a charm, thank you.