Recently the addon has become unusable for me because I can't see anything in the options menu.
Bugsack gives me this issue:

1x ...nfig-3.0/AceConfigDialog-3.0-86/AceConfigDialog-3.0.lua:1854: AceConfigRegistry-3.0-21:ValidateOptionsTable(): RaidFrameSettings_options.args.AuraHighlight.args.MissingAura.args.classSelection.values: expected a methodname, funcref or table, got 'nil'
[string "=[C]"]: ?
[string "@Ace3/AceConfig-3.0-3/AceConfigRegistry-3.0-21/AceConfigRegistry-3.0.lua"]:50: in function <...-3.0/AceConfigRegistry-3.0/AceConfigRegistry-3.0.lua:45>
[string "@Ace3/AceConfig-3.0-3/AceConfigRegistry-3.0-21/AceConfigRegistry-3.0.lua"]:211: in function <...-3.0/AceConfigRegistry-3.0/AceConfigRegistry-3.0.lua:206>
[string "@Ace3/AceConfig-3.0-3/AceConfigRegistry-3.0-21/AceConfigRegistry-3.0.lua"]:248: in function <...-3.0/AceConfigRegistry-3.0/AceConfigRegistry-3.0.lua:220>
[string "@Ace3/AceConfig-3.0-3/AceConfigRegistry-3.0-21/AceConfigRegistry-3.0.lua"]:255: in function <...-3.0/AceConfigRegistry-3.0/AceConfigRegistry-3.0.lua:220>
[string "@Ace3/AceConfig-3.0-3/AceConfigRegistry-3.0-21/AceConfigRegistry-3.0.lua"]:255: in function <...-3.0/AceConfigRegistry-3.0/AceConfigRegistry-3.0.lua:220>
[string "@Ace3/AceConfig-3.0-3/AceConfigRegistry-3.0-21/AceConfigRegistry-3.0.lua"]:255: in function <...-3.0/AceConfigRegistry-3.0/AceConfigRegistry-3.0.lua:220>
[string "@Ace3/AceConfig-3.0-3/AceConfigRegistry-3.0-21/AceConfigRegistry-3.0.lua"]:283: in function ValidateOptionsTable' [string "@Ace3/AceConfig-3.0-3/AceConfigRegistry-3.0-21/AceConfigRegistry-3.0.lua"]:325: in function app'
[string "@Ace3/AceConfig-3.0-3/AceConfigDialog-3.0-86/AceConfigDialog-3.0.lua"]:1854: in function Open' [string "@RaidFrameSettings/Options/OptionsFrame.lua"]:71: in function <...ceRaidFrameSettings/Options/OptionsFrame.lua:69> [string "=[C]"]: in function Show'
[string "@RaidFrameSettings/Core.lua"]:39: in function ?' [string "@Ace3/AceConsole-3.0-7/AceConsole-3.0.lua"]:90: in function ?'
[string "@FrameXML/ChatFrame.lua"]:4975: in function ChatEdit_ParseText' [string "@FrameXML/ChatFrame.lua"]:4638: in function ChatEdit_SendText'
[string "@FrameXML/ChatFrame.lua"]:4674: in function `ChatEdit_OnEnterPressed'
[string "*ChatFrame.xml:121_OnEnterPressed"]:1: in function <[string "*ChatFrame.xml:121_OnEnterPressed"]:1>

Locals:
(*temporary) = "AceConfigRegistry-3.0:ValidateOptionsTable(): RaidFrameSettings_options.args.AuraHighlight.args.MissingAura.args.classSelection.values: expected a methodname, funcref or table, got 'nil'"

Should be fixed with the next update, ty.