15x ClassicCodex\quest.lua:406: Attempt to access forbidden object from code tainted by an AddOn
[C]: in function GetName' ClassicCodex\quest.lua:406: in function CheckNamePlate'
ClassicCodex\quest.lua:122: in function <ClassicCodex\quest.lua:24>

Locals:
(*temporary) = {
0 =
}

Yes I meant to delete this. I disabled Neatplates and received the same error so it is not Neatplates.

I don't think this is caused by NeatPlates, as I cannot reproduce it, nor does it make sense looking at the code. And this error doesn't explicitly state that NeatPlates caused the 'taint'. Just that an addon is the cause.