2x Capping\battlegrounds-Battlegrounds.lua:191: attempt to index local 'dataTbl' (a nil value)
Capping\battlegrounds-Battlegrounds.lua:191: in function `?'
Capping\Capping-v8.0.21.lua:51: in function <Capping\Capping.lua:50>

Locals:
self =

{
GetBar = defined @capping\Capping.lua:460
PLAYER_LOGIN = defined @capping\Capping.lua:83
AREA_POIS_UPDATED = defined @capping\battlegrounds.lua:126
RestartSiegeBar = defined @capping\battlegrounds.lua:846
StartBar = defined @capping\Capping.lua:392
ScorePredictor = defined @capping\battlegrounds.lua:179
L = {
}
WSGGetTimeRemaining = defined @capping\battlegrounds.lua:888
UpdateBases = defined @capping\battlegrounds.lua:248
WSGFlagCarrier = defined @capping\battlegrounds.lua:881
prevTimer = 460853.927000
ZONE_CHANGED_NEW_AREA = defined @capping\Capping.lua:158
StopBar = defined @capping\Capping.lua:441
IoCSync = defined @capping\battlegrounds.lua:779
START_TIMER = defined @capping\Capping.lua:64
AVSync = defined @capping\battlegrounds.lua:501
CheckGateHealth = defined @capping\battlegrounds.lua:674
RegisterEvent = defined @capping\Capping.lua:57
HealthUpdate = defined @capping\battlegrounds.lua:363
AddBG = defined @capping\Capping.lua:152
UPDATE_BATTLEFIELD_STATUS = defined @capping\Capping.lua:225
Test = defined @capping\Capping.lua:304
UnregisterEvent = defined @capping\Capping.lua:60
RegisterTempEvent = defined @capping\Capping.lua:53
}
t = 461482.774000
ascore = 0
abases = 0
dataTbl = nil
(*temporary) = defined =[C]:-1
(*temporary) = 914
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = nil
(*temporary) = "attempt to index local 'dataTbl' (a nil value)"
updateBases = true
prevTime = 461482.774000
GetIconAndTextWidgetVisualizationInfo = defined =[C]:-1
allianceWidget = 914
strmatch = defined =[C]:-1
tonumber = defined =[C]:-1
hordeWidget = 915
ppsTable = {
1 = 1
2 = 1.500000
3 = 2
4 = 3.500000
5 = 30
}
MaxScore = 1500
ceil = defined =[C]:-1
format = defined =[C]:-1
L = {
halfway = "halfway"
allianceGate = "Alliance Gate"
hordeBoss = "Horde Boss"
hasTakenTheTrigger = "has taken the"
balinda = "Balinda Stonehearth"
galvangar = "Galvangar"
allianceBoss = "Alliance Boss"
upgradeToTrigger = "Upgrade to"
hordeGate = "Horde Gate"
droppedTrigger = "dropped"
capturedTheTrigger = "captured the"
takenTheFlagTrigger = "^(.+) has taken the flag!"
broken = "broken"
finalScore = "Final: %d - %d"
battleBegins = "Battle Begins"
flagRespawns = "Flag respawns"
}
prevText = "Final: 1500 - 460"
hordeWinning = false

This looks like it happened in Snowy AB, but I cannot reproduce it. Works fine for me.

Will need further info such as what point of time exactly it happened, and where.