8.1r19f Speech Bubble Error

[Slurpuff]

Whenever an NPC speaks in an instance, I get the following error that triggers until I turn speech bubbles off completely:

850x nibRealUI\Modules\SpeechBubbles.lua:92: Attempt to access forbidden object from code tainted by an AddOn
[C]:: in function 'GetName'
nibRealUI\Modules\SpeechBubbles.lua:92: in function <nibRealUI\Modules\SpeechBubbles.lua:89>
nibRealUI\Modules\SpeechBubbles.lua:110: in function <nibRealUI\Modules\SpeechBubbles.lua:108>

Here are the locals:

(*temporary) = ForbiddenNamePlate1 {
 0 = <userdata>
 GetPreferredInsets = <function> defined @s\Blizzard_NamePlates\Blizzard_NamePlates.lua:373
 GetAdditionalInsetPadding = <function> defined @s\Blizzard_NamePlates\Blizzard_NamePlates.lua:362
 ApplyOffsets = <function> defined @s\Blizzard_NamePlates\Blizzard_NamePlates.lua:344
 OnRemoved = <function> defined @s\Blizzard_NamePlates\Blizzard_NamePlates.lua:331
 OnAdded = <function> defined @s\Blizzard_NamePlates\Blizzard_NamePlates.lua:322
 UnitFrame = ForbiddenNamePlate1UnitFrame {
 }
 OnOptionsUpdated = <function> defined @s\Blizzard_NamePlates\Blizzard_NamePlates.lua:338
}