Here's the full error report:

5x SpartanUI\components\Nameplates.lua:71: attempt to index field 'NamePlates' (a nil value)
SpartanUI\components\Nameplates.lua:71: in function `styleFunc'
SpartanUI\libs\oUF\ouf.lua:321: in function <SpartanUI\libs\oUF\ouf.lua:245>
(tail call): ?
SpartanUI\libs\oUF\ouf.lua:759: in function <SpartanUI\libs\oUF\ouf.lua:730>

Locals:
frame = oUF_Spartan_NamePlatesNamePlate1 {
0 =
isNamePlate = true
id = "1"
PLAYER_ENTERING_WORLD = defined @SpartanUI\libs\oUF\ouf.lua:200
unit = "nameplate1"
bgHealth = {
}
Health = {
}
style = "Spartan_NamePlates"
UNIT_PET = defined @SpartanUI\libs\oUF\ouf.lua:228
UNIT_EXITING_VEHICLE = defined @SpartanUI\libs\oUF\ouf.lua:46
UNIT_EXITED_VEHICLE = defined @SpartanUI\libs\oUF\ouf.lua:46
__elements =

{
}
UNIT_ENTERED_VEHICLE = defined @SpartanUI\libs\oUF\ouf.lua:46
}
unit = "nameplate1"
health = {
0 =
colorTapping = true
colorReaction = true
}
nameString = ""
(*temporary) = nil
(*temporary) = 0
(*temporary) = 0
(*temporary) = 0
(*temporary) = 0.5
(*temporary) =
(*temporary) =
(*temporary) = nil
(*temporary) = "attempt to index field 'NamePlates' (a nil value)"
BarTexture = "SpartanUI\media\Smoothv2.tga"
SUI = {
SetDefaultModuleLibraries = defined @bartender4\libs\AceAddon-3.0\AceAddon-3.0.lua:398
DBUpgrades = defined @SpartanUI\core\Framework.lua:1042
oUF = {
}
EnableModule = defined @bartender4\libs\AceAddon-3.0\AceAddon-3.0.lua:363
modules = {
}
baseName = "SpartanUI"
IterateEmbeds = defined @bartender4\libs\AceAddon-3.0\AceAddon-3.0.lua:473
RaidFrames = SUI_RaidFrameHeader {
}
FirstTimeSetup = defined @SpartanUI\core\Framework.lua:690
FontRefresh = defined @SpartanUI\core\Framework.lua:1460
BuildNum = "85"
SetDefaultModulePrototype = defined @bartender4\libs\AceAddon-3.0\AceAddon-3.0.lua:440
PartyFrames = SUI_PartyFrameHeader {
}
defaultModuleState = true
IsEnabled = defined @bartender4\libs\AceAddon-3.0\AceAddon-3.0.lua:482
DisableModule = defined @bartender4\libs\AceAddon-3.0\AceAddon-3.0.lua:381
RegisterMessage = defined @AtlasLoot\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:116
GetArgs = defined @bartender4\libs\AceConsole-3.0\AceConsole-3.0.lua:144
GetFontFace = defined @SpartanUI\core\Framework.lua:1394
BT4ProfileAttach = defined @SpartanUI\core\Framework.lua:1060
SetEnabledState = defined @bartender4\libs\AceAddon-3.0\AceAddon-3.0.lua:455
enabledState = true
RegisterEvent = defined @AtlasLoot\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:116
IterateModules = defined @bartender4\libs\AceAddon-3.0\AceAddon-3.0.lua:468
Version = "4.6.0"
Err = defined @SpartanUI\core\Framework.lua:1299
suihelp = defined @SpartanUI\core\Framework.lua:1260
OnInitialize = defined @SpartanUI\core\Framework.lua:975
RegisterChatCommand = defined @bartender4\libs\AceConsole-3.0\AceConsole-3.0.lua:85
reloadui = defined @SpartanUI\core\Framework.lua:1162
GetModule = defined @bartender4\libs\AceAddon-3.0\AceAddon-3.0.lua:241
BT4RefreshConfig = defined @SpartanUI\core\Framework.lua:1102
round = defined @SpartanUI\core\Framework.lua:1363
UnregisterChatCommand = defined @bartender4\libs\AceConsole-3.0\AceConsole-3.0.lua:111
opt = {
}
SpartanUIDB = {
}
WhatsNew = defined @SpartanUI\core\WhatsNew.lua:5
GetName = defined @bartender4\libs\AceAddon-3.0\AceAddon-3.0.lua:310
RegisterCallback = defined @AtlasLoot\Libs\CallbackHandler-1.0\C