WowAce

What steps will reproduce the problem?
1. First time having it occur, so unsure of what triggered it
2. -> Was mousing over items in the auction house
3.

What is the expected output? What do you see instead? WoW told me I had too many errors and my performance might be degraded as a result, first time I ever saw this message, only reason I checked my bugsack to notice this error.

What version of the product are you using? r347

Do you have an error log of what happened?

35x libs\LibStatLogic-1.2\LibStatLogic-1.2-64.lua:12601: attempt to perform arithmetic on a nil value
libs\LibStatLogic-1.2\LibStatLogic-1.2-64.lua:12601: in function "GetSum"
RatingBuster\RatingBuster-r347.lua:4316: in function "StatSummary"
RatingBuster\RatingBuster-r347.lua:2717: in function "handler"
libs\LibTipHooker-1.1\LibTipHooker-1.1-16.lua:179: in function <libs\LibTipHooker-1.1\LibTipHooker-1.1.lua:174>
<in C code>
Informant-5.12.5147 (QuirkyKiwi)\Libs\LibExtraTip\LibExtraTip.lua:282: in function "SetAuctionItem"
Blizzard_AuctionUI\Blizzard_AuctionUI.lua:1599: in function "AuctionFrameItem_OnEnter"
<string>:"*:OnEnter":2: in function <string>:"*:OnEnter":1

Locals:
self = <table> {
SetDefaultModuleLibraries = <func> @Ace3\..\AceAddon-3.0.lua:383
Enable = <func> @Ace3\..\AceAddon-3.0.lua:315
RegisterChatCommand = <func> @Ace3\..\AceConsole-3.0.lua:85
EnableModule = <func> @Ace3\..\AceAddon-3.0.lua:348
modules = <table> {}
GetModule = <func> @Ace3\..\AceAddon-3.0.lua:231
IterateEmbeds = <func> @Ace3\..\AceAddon-3.0.lua:458
defaultModuleLibraries = <table> {}
GetStatMod = <func> @..\RatingBuster.lua:2213
UnregisterChatCommand = <func> @Ace3\..\AceConsole-3.0.lua:111
MODIFIER_STATE_CHANGED = <func> @..\RatingBuster.lua:2320
optionsFrames = <table> {}
SplitDoJoin = <func> @..\RatingBuster.lua:2739
Printf = <func> @Ace3\..\AceConsole-3.0.lua:69
OnProfileChanged = <func> @..\RatingBuster.lua:2231
SetDefaultModulePrototype = <func> @Ace3\..\AceAddon-3.0.lua:425
OnProfileReset = <func> @..\RatingBuster.lua:2238
OnInitialize = <func> @..\RatingBuster.lua:2258
baseName = "RatingBuster"
name = "RatingBuster"
Bench = <func> @..\RatingBuster.lua:4575
IsEnabled = <func> @Ace3\..\AceAddon-3.0.lua:467
orderedModules = <table> {}
StatSummary = <func> @..\RatingBuster.lua:4180
DisableModule = <func> @Ace3\..\AceAddon-3.0.lua:366
ProcessText = <func> @..\RatingBuster.lua:2760
Disable = <func> @Ace3\..\AceAddon-3.0.lua:330
ADDON_LOADED = <func> @..\RatingBuster.lua:2335
OnNewProfile = <func> @..\RatingBuster.lua:2248
RegisterMessage = <func> @Ace3\..\CallbackHandler-1.0.lua:118
GetArgs = <func> @Ace3\..\AceConsole-3.0.lua:144
Print = <func> @Ace3\..\AceConsole-3.0.lua:54
ShowConfig = <func> @..\RatingBuster.lua:2165
PLAYER_LEVEL_UP = <func> @..\RatingBuster.lua:2308
OnDisable = <func> @..\RatingBuster.lua:2301
OnEnable = <func> @..\RatingBuster.lua:2287
IsModule = <func> @Ace3\..\AceAddon-3.0.lua:484
db = <table> {}
SetDefaultModuleState = <func> @Ace3\..\AceAddon-3.0.lua:403
UNIT_AURA = <func> @..\RatingBuster.lua:2315
ClearCache = <func> @..\RatingBuster.lua:2216
SetEnabledState = <func> @Ace3\..\AceAddon-3.0.lua:440
SetupOptions = <func> @..\RatingBuster.lua:2136
enabledState = true
date = "2011-05-07"
RegisterEvent = <func> @Ace3\..\CallbackHandler-1.0.lua:118
UnregisterAllMessages = <func> @Ace3\..\CallbackHandler-1.0.lua:202
version = "1.6.4 (r346)"
UnregisterAllEvents = <func> @Ace3\..\CallbackHandler-1.0.lua:202
SendMessage = <func> @Ace3\..\CallbackHandler-1.0.lua:87
IterateModules = <func> @Ace3\..\AceAddon-3.0.lua:453

Please provide any additional information below.

/sldebug gave this on the first item that popped up this error when I was mousing over it:

[05:30:02]   DeepScan2 Lookup Fail: 'restores% of your maximum mana whenever you kill a target that yields experience or honor.', pattern = '^(.-) ?([%d%.]+) ?(.-)$'
[05:29:11] [1]  Joined Channel: [1. General - Stormwind City]
[05:29:11] [2]  Joined Channel: [2. Trade - City]
[05:29:35] There are too many errors in your UI. As a result, your game experience may be degraded. Disable or update the failing addons if you don't want to see this message again.
[05:30:02] [Discerning Eye of the Beast]
[05:30:02]   SinglePlus: +29 Intellect, INT=+29
[05:30:02] S1: 'Restores 2% of your maximum mana whenever you kill a target that yields experience or honor.'
[05:30:02] S1-1: 'Restores 2% of your maximum mana whenever you kill a target that yields experience or honor.'
[05:30:02]   DeepScan2 Lookup Fail: 'restores% of your maximum mana whenever you kill a target that yields experience or honor.', pattern = '^(.-) ?([%d%.]+) ?(.-)$'
[05:30:02]   DeepScan2 Fail: 'Restores 2% of your maximum mana whenever you kill a target that yields experience or honor.'
[05:30:02]   No Match: 'Equip: Restores 2% of your maximum mana whenever you kill a target that yields experience or honor.'
[05:30:02] StatLogic:GetDiff
[05:30:02] [Inherited Insignia of the Alliance]
[05:30:02]   SingleEquip: Equip: Increases your resilience rating by 30., RESILIENCE_RATING=30
[05:30:02] StatLogic:GetDiff
[05:30:02] StatLogic:GetDiff
[05:30:02] StatLogic:GetDiff
[05:30:02] [Darkmoon Card: Blue Dragon]
[05:30:02]   PreScan Exclude: Equip: 2% chance on successful spellcast to allow 100% of your Mana regeneration to continue while casting for 15 sec.(%d+ secs?[,%.])
[05:30:02] StatLogic:GetDiff
[05:30:02] StatLogic:GetDiff