WowAce

What steps will reproduce the problem?
1. Do a cold login (not a reloadui)

What is the expected output? What do you see instead?
a torrent of nil errors.

What version of the product are you using?
r103 alpha (was present in previous versions as well)

Do you have an error log of what happened?

MobSpells\\MobSpells-r103.lua:540: table index is nil

Please provide any additional information below.
The error is caused because GetRealZoneText() does not return values until the first ZONE_CHANGED_NEW_AREA event fires on a cold login.
Since this event is already registered to check for enabling logging or not the simplest fix is to add these to

local function shouldLog()
	local db = MobSpells.db.profile
	local should = nil
	local i, t = IsInInstance()
	local d = GetInstanceDifficulty()
	local z = GetRealZoneText() -- won't return values until the first ZONE_CHANGED_NEW_AREA on a cold login
	if not z or z == "" then return end

That way CLEU won't be registered (and the error triggered) until the client has initialized far enough to have zone info.