WowAce

1x RangeDisplay/RangeDisplay.lua:894: attempt to call global 'LoadAddOn' (a nil value)
[string "@RangeDisplay/RangeDisplay.lua"]:894: in function `loadOptions'
[string "@RangeDisplay/RangeDisplay.lua"]:755: in function <RangeDisplay/RangeDisplay.lua:710>
[string "=[C]"]: ?
[string "@AutoVendor/libs/AceAddon-3.0-13/AceAddon-3.0.lua"]:70: in function <AutoVendor/libs/AceAddon-3.0/AceAddon-3.0.lua:65>
[string "@AutoVendor/libs/AceAddon-3.0-13/AceAddon-3.0.lua"]:498: in function `InitializeAddon'
[string "@AutoVendor/libs/AceAddon-3.0-13/AceAddon-3.0.lua"]:623: in function <AutoVendor/libs/AceAddon-3.0/AceAddon-3.0.lua:615>

I am seeing this error too.

2x RangeDisplay/RangeDisplay.lua:894: attempt to call global 'LoadAddOn' (a nil value)
[string "@RangeDisplay/RangeDisplay.lua"]:894: in function `loadOptions'
[string "@RangeDisplay/RangeDisplay.lua"]:755: in function <RangeDisplay/RangeDisplay.lua:710>
[string "=[C]"]: ?
[string "@AutoProfitX2/libs/AceAddon-3.0-13/AceAddon-3.0.lua"]:66: in function <...dOns/AutoProfitX2/libs/AceAddon-3.0/AceAddon-3.0.lua:61>
[string "@AutoProfitX2/libs/AceAddon-3.0-13/AceAddon-3.0.lua"]:494: in function `InitializeAddon'
[string "@AutoProfitX2/libs/AceAddon-3.0-13/AceAddon-3.0.lua"]:619: in function <...dOns/AutoProfitX2/libs/AceAddon-3.0/AceAddon-3.0.lua:611>

Locals:
self = <table> {
Sections = <table> {
}
modules = <table> {
}
defaultModuleLibraries = <table> {
}
name = "RangeDisplay"
orderedModules = <table> {
}
units = <table> {
}
baseName = "RangeDisplay"
db = <table> {
}
enabledState = true
version = "RangeDisplay-v6.1.3"
defaultModuleState = false
AppName = "RangeDisplay"
}
(*temporary) = nil
(*temporary) = "RangeDisplay_Options"
(*temporary) = "attempt to call global 'LoadAddOn' (a nil value)"
OptionsAppName = "RangeDisplay_Options"

The fix is easy. Just change LoadAddOn to C_AddOns.LoadAddOn. There's a lot of this deprecated API stuff that finally got removed in 11.0.0 and 11.0.2 that addon authors were behind in fixing.

I'm also getting this error. Where on the line am I changing this, Kharthus? I can't get it to work.

@xXBcMadassXx

RangeDisplay.lua
Line 894

self.optionsLoaded, self.optionsLoadError = C_AddOns.LoadAddOn(OptionsAppName)

Edit:
The error messages tell you were to search.
"[string "@RangeDisplay/RangeDisplay.lua"]:894: in function `loadOptions'"

Might be useful in the future.