I'm getting this error for a while now and can't find the cause.
It won't even show the dropdown or the spec buttons on multiple characters.

25x ...ns/ImprovedTalentLoadouts/ImprovedTalentLoadouts.lua:156: attempt to concatenate local 'realm' (a nil value)
[string "@ImprovedTalentLoadouts/ImprovedTalentLoadouts.lua"]:156: in function <...ns/ImprovedTalentLoadouts/ImprovedTalentLoadouts.lua:154>
[string "@ImprovedTalentLoadouts/ImprovedTalentLoadouts.lua"]:214: in function CheckDBIntegrity' [string "@ImprovedTalentLoadouts/ImprovedTalentLoadouts.lua"]:338: in function InitializeTalentLoadouts'
[string "@ImprovedTalentLoadouts/ImprovedTalentLoadouts.lua"]:108: in function <...ns/ImprovedTalentLoadouts/ImprovedTalentLoadouts.lua:102>

Locals:
name = "Malphaas"
realm = nil
(*temporary) = "Malphaas"
(*temporary) = "-"
(*temporary) = nil
(*temporary) = "attempt to concatenate local 'realm' (a nil value)"