TankPoints
TankPoints 2.0 - A benchmark for survivalbility gear
About TankPoints
TankPoints was created to help myself compare different pieces of tanking gear, because it was difficult to decided at a glance like whether 12 defense is better then 1 dodge.
TankPoints can be seen as how much damage you can take before damage reduction, it considers your max health, armor, defense, dodge, parry, block, block value, resilience, crushing blow chance, miss, crit reduction, talants, buffs, stance/forms, and more.
Keep in mind though, that higher TankPoints does not make a better tank, it is only a benchmark for survivalbility gear but does not calculate threat. It can not decide for you what you should wear for what boss, but it can provide you with a wealth of information what will hopfully be useful for choosing gear.
About TankPoints 2.0
TankPoints 2.0 is a complete rewrite of my original TankPoints for WoW 2.0 using the Ace2 framework.
It has a much improved TankPoints algorithm, intergrates nicely into the character stats dropdown menu, and shows a lot more information then the original TankPoints.
2.0 introduced a new combat ratings system which made it even harder to compare gear, in order to code combat rating support for TankPoints, the exact rating to percentage formula is required which Blizzard didn't give us. Luckly, I have suceessfully reverse engineered the rating formula for all levels and coded an addon called "Rating Buster" that converts ratings on item tooltips into percentages, you can try it out here.
Rating Buster: http://wow.curse-gaming.com/en/files/details/4991/rating-buster/
How to use
Gravity has writen an awesome 7 page guide to using TankPoints on his blog: http://pwnwear.com/tankpoints-user-guide/
The value of Block
The value is Shield Block Value and Block Rating is highly dependent on what you are tanking.
Its very good for mobs that don't hit very hard like in heroics, but is worth much less on hard hitting bosses in 25 man raids.
At level 80, TankPoints' default mob damage is tuned to 25 man raids, with a value of 24365 damage before mitigation.
You can change this value to match what you plan on tanking by using the "/tp mob damage" command in game.
A mob damage of 10505 for example is a good value for level 80 heroics.
TankPoints also calculates the value of Shield Block for Warriors, and Holy Shield for Paladins.
You can use the "/tp player sbfreq" command to set a shield block frequency that matches your rotation (in how many seconds AFTER cooldown finishes).
For most tankadins rotations, you will have a 100% Holy Shield uptime, using "/tp player sbfreq 1" will tell TankPoints that you will use Holy Shield 1 second after cooldown finishes (every 9 secs)
TankPoints 2.0 Features
Imporved TankPoints 2.0 formula
- Support for all combat ratings including the new resilience stat
- Support for block% and block value
- Support for crushing blows
- Support for combat table and correctly caps off at a total of 100%.
Using Hit < Crushing < Crit < Block < Parry < Dodge < Miss - Support for mob stats:
- Mob level - defaults player level 3
- Mob damage
- Mob melee crit chance
- Mob melee crit bonus
- Mob melee miss chance
- Mob spell crit chance
- Mob spell crit bonus
- Mob spell miss chance
Improved TankPoints Calculator
TankPoints User Interface
- Intergrated in to the Character stats dropdown menu (See Screeshots)
- When TankPoints is selected it displays:
- TankPoints
- Melee Damage Reduction
- Block Value
- Spell TankPoints
- Spell Damage Reduction
- TankPoints tooltip:
- Your stance
- Mob Stats
- Mob Level
- Mob Damage (after damage reduction)
- Mob Crit Chance
- Mob Miss Chance
- TankPoints per StatValue - Shows how much TankPoints you gain for each stats with equal item values, because the values below are equal in the item value formula, you can use this data to see what gives the most bang for the buck in terms of item budgets.
- 1 Agility =
- 1.5 Stamina =
- 10 Armor =
- 1 Resilience =
- 1 Defense Rating =
- 1 Dodge Rating =
- 1 Parry Rating =
- 1 Block Rating =
- 1.54 Block Value
- Option to hold down ALT key will show how much TankPoints you gain for each stat point
- 1 Agility
- 1 Stamina
- 1 Armor
- 1 Resilience
- 1% Defense
- 1% Dodge
- 1% Parry
- 1% Block
- 1 Block Value
- Melee Damage Reduction tooltip:
- Armor Damage Reduction against mob level - Useful because the default armor tooltip only shows the reduction for the same level
- Mob Level, Player Level
- Combat Table - Hit < Crushing < Crit < Block < Parry < Dodge < Miss. The total of these chances must be capped at 100%, if you exceed 100% then lower priority values will be pushed off the table. For example, when you press shield block ( 75% block chance), hit, crush and crit will all be pushed off and will be 0, your real block chance will also be capped at (100% - Parry% - Dodge% - Miss%)
- Block Value tooltip - Block Value should have been included in the default UI, but they didn't so I coded my own function that does it, strength, items, talents(warrior, paladin, shaman) are all considered in the algorithm.
- Mob Damage before Damage Reduction (armor and stance effects)
- Mob Damage after Damage Reduction
- Blocked percentage
- Block Value / Mob Damage after DR
- Block Chance
- Equivalent Block Mitigation
- Block Chance * Blocked percentage:
This can be seen equal with the same amount of dodge or parry.
- Spell TankPoints Tooltip - Shows your strongest school by default
- Your stance
- TankPoints at the following Melee/Spell Damage Ratio
- 25% Melee Damage 75% <school> damage
- 50% Melee Damage 50% <school> damage
- 75% Melee Damage 25% <school> damage
- Can manually cycle through all schools by left clicking the stat
- Reset back to showing the strongest school by right click the stat
- Spell Damage Reduction - Shows your strongest school by default
- Shows damage reductions for all schools
- Same click functions as the Spell TankPoints Tooltip
Supported class talants and buffs
- Warrior: Improved Defensive Stance, Shield Mastery, Shield Wall - Buff, Death Wish - Buff, Recklessness - Buff, Toughness, Vitality
- Druid: Survival of the Fittest, Natural Perfection, Thick Hide, Balance of Power, Heart of the Wild
- Paladin: Shield Specialization, Divine Purpose, Blessed Life, Ardent Defender, Spell Warding, Improved Righteous Fury, Divine Strength, Toughness
- Shaman: Shield Specialization, Elemental Shields, Elemental Warding, Toughness
- Rogue: Sleight of Hand, Heightened Senses, Deadened Nerves, Vitality, Sinister Calling, Cloak of Shadows - Buff
- Hunter: Survival Instincts, Thick Hide, Combat Experience, Lightning Reflexes
- Priest: Shadow Resilience, Spell Warding, Pain Suppression - Buff, Enlightenment
- Hunter: Survivalist, Endurance Training
- Warlock: Demonic Resilience, Master Demonologist, Soul Link - Buff, Demonic Embrace, Fel Stamina
- Mage: Arctic Winds, Prismatic Cloak, Playing with Fire, Frozen Core
Slash Commands
Use: /tp or /tankpoints
- '''/tp''' - Show help
- '''/tp calc''' - Toggle calculator
- '''/tp mob''' - Show mob stats help
- '''/tp mob level (-20 - 20)''' - Sets the level difference between the mob and you
- '''/tp mob damage (0 - 99999)''' - Sets mob's damage before damage reduction
- '''/tp mob default''' - Restores default mob stats
- '''/tp mob advanced''' - Show advanced mob stats help
- '''/tp mob advanced crit (0 - 100)''' - Sets mob's melee crit chance
- '''/tp mob advanced critbonus''' - Sets mob's melee crit bonus
- '''/tp mob advanced miss (0 - 100)''' - Sets mob's melee miss chance
- '''/tp mob advanced spellcrit (0 - 100)''' - Sets mob's spell crit chance
- '''/tp mob advanced spellcritbonus''' - Sets mob's spell crit bonus
- '''/tp mob advanced spellmiss (0 - 100)''' - Sets mob's spell miss chance
- '''/tp player sbfreq (0 - 1000)''' - Sets the Shield Block press delay in seconds after Shield Block finishes cooldown
TankPoints Formulas
TankPoints
Melee Total Reduction
- totalReduction[MELEE] = 1 - ((mobCritChance * (1 + mobCritBonus) * mobCritDamageMod) + (mobCrushChance * 1.5) + (1 - mobCrushChance - mobCritChance - blockChance * blockedMod - parryChance - dodgeChance - mobMissChance)) * (1 - armorReduction) * meleeTakenMod
Spell Total Reduction
- totalReduction[SCHOOL] = 1 - ((mobSpellCritChance * (1 + mobSpellCritBonus) * mobSpellCritDamageMod) + (1 - mobSpellCritChance - mobSpellMissChance)) * (1 - schoolReduction[SCHOOL]) * spellTakenMod
Armor Reduction
levelModifier = attackerLevel if ( levelModifier > 59 ) then levelModifier = levelModifier + (4.5 * (levelModifier - 59)) end armorReductionTemp = armor / ((85 * levelModifier) + 400) armorReduction = armorReductionTemp / (armorReductionTemp + 1) if armorReduction > 0.75 then armorReduction = 0.75 end if armorReduction < 0 then armorReduction = 0 end
Defense Effect
- defenseEffect = (defense - attackerLevel * 5) * 0.04 * 0.01
Block Value From Strength
- blockValueFromStrength = floor(totalStr * 0.5 - 10)
Block Value
- blockValue = floor((floor(totalStr * 0.5 - 10) + blockValueFromItems + blockValueFromShield) * blockValueMod)
Mob Damage (default formula)
- mobDamage = (levelModifier * 55) * meleeTakenMod * (1 - armorReduction)
Resilience Effect
- resilienceEffect = ReverseRating(resilience, playerLevel) * 0.01
Mob Crit Chance
- mobCritChance = max(0, 0.05 - defenseEffect - resilienceEffect)
Mob Crit Bonus
- mobCritBonus = 1
Mob Miss Chance
- mobMissChance = max(0, 0.05 + defenseEffect)
Mob Crush Chance (if mobLevel is +4 or more)
- mobCrushChance = (mobLevel - playerLevel) * 0.1 - 0.15
Mob Crit Damage Mod
- mobCritDamageMod = max(0, 1 - resilienceEffect * 2)
Blocked Mod
- blockedMod = min(1, blockValue / mobDamage)
Mob Spell Crit Chance
- mobSpellCritChance = max(0, 0 - resilienceEffect)
Mob Spell Crit Bonus
- mobSpellCritBonus = 0.5
Mob Spell Miss Chance
- mobSpellMissChance = 0
Mob Spell Crit Damage Mod
- mobSpellCritDamageMod = max(0, 1 - resilienceEffect * 2)
Resistance Reduction
- schoolReduction[SCHOOL] = 0.75 * (resistance[SCHOOL] / (mobLevel * 5))
EffectiveHealth (EH)
- effectiveHealth[MELEE] = playerHealth * 1/(1 - (1-armorReduction) * damageTakenMod)
- effectiveHealth[SCHOOL] = playerHealth * 1/(1 - damageTakenMod) In other words: how much health you have times how much that health translates into raw damage when you're hit
EffectiveHealthWithBlock (EHB)
For every swing of the mob (see mobAtkSpeed) until you are out of health if time to press the shield block button given timeBetweenPresses refresh charges on shield block if mobHitChance + mobCrushChance + mobCritChance == 0 or (charges left and mobHitChance + mobCrushChance + mobCritChance <= 75%) use a charge on shield block min(healthLeft, take raw damage from the monster per mobDamage - blockValue) else min(healthLeft, take raw damage from the monster per mobDamage) end end
TODO
Version History
2.8.4
- toc update
- Packaged with new libraries with 3.2.0 class support
- Block Value is now 2/0.65 per statpoint
- Paladin: Fixed Holy Shield talent location
- Default mob damage at level 83 is now 44165, up from 24365 to match current raid difficulty.
- Fixed TankPoints per Defense Rating calculation
- Fixed Effective Health with Block
2.8.3
- toc update
- Packaged with new libraries with 3.1.3 class support
2.8.2
- NEW: Avoidance diminishing returns calculations in Melee DR tooltip will show you how much avoidance you gain for +16 of each stat.
- Diminishing returns for chance to be missed now supported.
- Paladin: Combat table will now reflect the effects of Holy Shield if you set it at 100% uptime. To set 100% Holy Shield uptime, use a sqfreq lower then or equal to 2 secs, ex: /tp player sbfreq 2
- Fixed Block Value formula
- Can set shield block frequency from 0 secs to 1000 secs, set it to 1000 if you don't want TankPoints to calculate the shield block effect
- Defense isn't affected by DR (Defense Rating is)
- Fixed StatFrame data not updated correctly during stance/presence/form/aura change
- Uses LibStatLogic-1.1 and LibTipHooker-1.1 now
- Made the Calculator movable by dragging the sides
- Support for enchant statmods:
- Enchant: Rune of the Stoneskin Gargoyle: +2% Stamina
- Enchant: Rune of Spellshattering: Deflects 4% of all spell damage
- Enchant: Rune of Spellbreaking: Deflects 2% of all spell damage
- Support for meta gem statmods:
- Austere Earthsiege Diamond: 2% Increased Armor Value from Items
- MetaGem: Eternal Earthsiege Diamond:+5% Shield Block Value
- MetaGem: Eternal Earthstorm Diamond: +5% Shield Block Value
- MetaGem: Effulgent Skyflare Diamond: Reduce Spell Damage Taken by 2%
- Fixed Warrior talent detection: Vitality, Strength of Arms, Improved Defensive Stance
- Death Knight: Added Stance: Frost Presence detection fixed
- Death Knight: Added Buff: Bone Shield: Damage reduced by 40%.
- 3.0.8: Death Knight: Updated Stance: Frost Presence: The bonus armor has been increased from 60 to 80% and magic damage reduction increased from 5 to 15%.
- 3.0.8: Death Knight: Updated Buff: Bone Shield: Damage reduced by 20%.
- 3.0.8: Death Knight: Updated Buff: Will of the Necropolis: Reduce the damage of any attack that takes the DK below 35% health by 5%/10%/15% instead of boosting armor when wounded.
- 3.0.8: Druid: Updated Talent: Survival of the Fittest: This talent now grants 22/44/66% bonus armor in Bear Form and Dire Bear Form in addition to all of its previous effects.
- 3.0.8: Shaman: Updated Talent: Elemental Warding: Now reduces all damage taken by 2/4/6%.
- Removed Endurance (Tauren racial)
2.8.1
- Support for Warrior talent: Critical Block
- Fixed Shield Block and Holy Shield calculations
- Default mob damage at level 83 is now 24365 instead of 10505
- Fixed a bug causing "ADD_CRIT_TAKEN" from talents to be capped at MobCritChance
- Paladin: Added Talent: Redoubt - Increases your block value by 10%/20%/30%
- Death Knight BaseDodge changed from 0.758% to 3.4636%.
2.8.0
- Avoidance diminishing returns support: Calculator, ItemTooltip, TankPoints Per Stat, TankPoints Per StatValue
- Supports Death Knight: Forceful Deflection - Increases your Parry Rating by 25% of your total Strength
- Added Str to TankPoints Per Stat, TankPoints Per StatValue
- Fixed EffectiveHealth, EffectiveHealthWithBlock
- Fixed Warrior Shield Block calculations
- Support for Paladin Holy Shield
- Crushing blows only happen when mob is +4 levels
- 1 Strength now gives 0.5 Block Value
- Removed Babble-Spell-2.2, Deformat-2.0, Gratuity-2.0
- Fixed immediate errors in 3.0.2
- Calculator: Fixed error
- Code cleanup and stability tweaks
- toc 30000
2.7.0 by Aliset
- NEW: You can specify pre-mitigation mob damage using /tp mob drdamage
- NEW: Ciderhelm's EffectiveHealth and a derived stat, EffectiveHealthWithBlock
- Moved to StatFrameLib-1.0 for paperdoll stat frames
- Alt events didn't seem to be working, so moved to clicks for per-stat/per-rating change
- Consolidated some aspects of TankPoints calculation
- Pretty print many of the large numbers shown (so 789956 shows up as 789,956)
2.6.8
- NEW: You can now open the options window using /tp optionswin
- Fixed: Error in TankPoints.lua:1286 and TankPoints.lua:947
- Updated Korean localizations by fenlis
2.6.7
- Updated Taiwan localization by Whitetooth
- Improved stat scanning
- Updated German localization
2.6.6
- Updated French localization by Tixu, TankPoints Tooltips now works with the French client
- Fixed a bug causing TankPoints tooltips not showing correctly for languages other then English
- Fixed Parry/SpellHaste rating calculations
- Updated libs
2.6.5
- Pre updated the TOC to 2.1.0
- Support for Shield Block skill, with options to set mobs attack speed(default 2.0) and average time between Shield Block key presses(default 8 sec)
- Fixed error when changing options with the Calculator open
2.6.0
- Calculator: Fixed MobLevel calculations
- Better Talant and Buff support
- Improved Block Value calculation
- Code for smooth transition to 2.1.0
- Updated Libs
2.5.7
- Fixed incorrect tooltip values
- Fixed calculater rounding errors
2.5.6
- Fixed library error
2.5.5
- Added StatLogic deDE localizations by Gailly
2.5.4
- Fixed incorrect armor calculations in tooltips for Druilds
- Added Taiwan localizations by CuteMiyu
2.5.3
- Updated Korean localization by fenlis
2.5.2
- Fixed another StatLogic bug
2.5.1
- Fixed StatLogic bug
- Druid Bear Form formulas updated to 2.0.10 fixes
- Updated French localizations by Tixu
- Added Korean localization by fenlis
2.5.0
- Item tooltips will now show TankPoints (only works for English client until localized)
- Removed Compost
- Removed ReverseRating.lua
- Code cleanup and optimizations
2.4.1
- Fixed Calculator Block Value from Strength calculations
2.4.0
- May now input Armor from items and Armor from non items in the Calculator
- Really fixed Night Elf and Feral Swiftness dodge calculations
- Improved accuracy of calculator stat calculations
- Improved calculator support for Druid Forms
- Calculator support for Druid talant * Heart of the Wild, Balance of Power,
- Calculator support for Rogue talant * Cloak of Shadows
- Calculator support for Paladin talant * Toughness
- Calculator support for Hunter talant * Survivalist, Endurance Training
- Calculator support for Warlock talant * Fel Stamina
- Calculator support for health mods
- Support for Death Wish, Recklessness
2.3.5
- Fixed Druid, Hunter and Night Elf dodge calculation bug
- Fixed Druid talant * Survival of the Fittest not being counted bug
- Fixed Paladin talant * Ardent Defender being always on bug
2.3.3
- Fixed Druid Dire Bear Form armor calculations
2.3.2
- Added support for new pally talants: Spell Warding, Improved Righteous Fury
- Updated Libs
2.3.1
- TOC 20003
- Updated Libs
2.3
- Greatly improved the Calculator algorithms
- Calculator: better support for talants that give bonus strength, agility, stamina, armor
- Calculator: better handling for Defense Rating
- Improved TP per StatValue/Stat calculations in TankPoints tooltips
2.2.3
- Fixed low level resistance calculations
- Fixed Druid Bear Form armor bonus
- Plays nice with other mods that may add to the character dropdown list
2.2.2
- Fixed Tauren health error
2.2.1
- Added German localization by AbbedieD
- Improved support for Druid armor bonuses in various forms
- Removed (%) from Defense in Caculator
- Partially updated French localizations
- Updated libs
2.2
- The improved TankPoints Calculator is now in
- Changed Soul Link formula 30% -> 20%
2.1.1
- Fixed TP per defense rating in tooltip again
- Updated French localizations by Tixu
2.1
- Support for various class specific talants and buffs
- Fixed TP per defense rating in tooltip
- PlayerHasShield() localized
- GetBlockValue() localized
- Fixed a couple slash command's option range
- Partial French localizations by Tixu
2.0.1
- Fixed ReverseRating error
- Updated Libs
- Fixed a display bug in TankPoints tooltips
- Fixed Block Value algorithm not working with some shields
- Set Block% to zero if you don't have a shield on
2.0
- Complete rewrite for the 2.0 client using Ace2
Something is wrong with the druid armor calculation in the calculator.
Example: Boots 310 AC vs. 176 AC Difference = -134 AC
The calculator says, my armor will drop from 25211 to 24533 When I change these boots, my armor drops to 24401. Difference = 132 AC. There is no agility on both boots.
The stat formulae for the Druid are not correct. I take off my gloves which add 14 agility, then manually apply the 14 agility, and it shows my dodge% being higher than when I actually equip the gloves. Basically, it's showing I am to get +.30% dodge from the gloves than I actually am according to Blizzard's paper doll.
In assigning points, Does TankPoints take into account that after 490 defense, the value of defense is reduced due to the player being effectively immune to critical strikes?
Druid talent (Survival of the Fittest) 3% crit reduction does not get countet for me but it seems to get counted just fine for my friend.
Anyone know what might be wrong?
=
Search the TankPoints.lua for "Druid: Survival of the Fittest" and replace with TP should "work as intended" afterwards ...The agi-to-dodge conversion ratio is wrong as stated, but i can provide a hotfix for this as well (i hope) [brute force fix]
==
Search the TankPoints.lua for "TankPoints.AgiToDodgeBase" and replace with IMPORTANT: This will cause problems if you have points in Feral Swiftness as TP currently doesnt check for this talent (i assume due to the fact that it was changed with BC and didnt have an effect on TP before that). In short: Changing the value will only fix the calculator while in caster form. If you want the calculator to return correct values while in bear form AND you have 2/2 in Feral Swiftness, you have to replace the original value with ["DRUID"] = 2.132, This will break the calculator while being in caster form again, but the predictions for dodge are accurate if you enter the correct amount of added agility (TP doesnt take SotF into account, so you would have to adjust your agility for 1 agi on average per 33 points of added agility - but you probably know this from stamina adding with having points in Heart of the Wild). It's rather brute force, i know - i'm not that deep into the addon to code this in 5 mins :) good luck to all druid tanks out there ..Thanks man. Fixed the SotF problem perfectly.
The agility fix seems kinda wierd? Does Tp calculate how much agility is needed per dodge instead of just knowing it? That seems kinda silly since you would still have to know the base dodge then. If it is some way of trying to be prepaired for changes blizzard would make to the agi/dodge ratio... How would TP know that it wasn't the defence/dodge ratio or dodgerating/dodge ratio that were changed?
A paladin friend of mine installed the mod yesterday, he has the Ardent defender talent and it seem the talent is alway taken into account in the calculation of tankpoints. He doesnt have very good tanking gear and have somehing like 44000 tankpoints with no buff.
Thx for this great mod. Anyway, is it possible to add a "second" TankPoint figure?
Figure 1) = like now = a calculated figure for tanking equipment (= def tank)
Figure 2) a similar figure for damage equipment (= off tank)?
I would like to see an option that, when you have the TankPoints Calculator up, you can click on an item in your inventory (shift + click or alt + click) and the stats difference with the currently equipped item in that slot is input into the calculator. At the moment, it is very hardious work to calculate the differences manually, input them in the calculator and finally see what item is "better" and why.
Tankpoints doesn't seem to work with the updated Paladin protection talents for BC, such as Improved Righteous Fury, the updated Spell Warding, etc. Would it be possible to get an ETA as to when these talents will be taken into consideration?
Thanks very much and keep up the work on the great mod :)
@Archael Spell Warding and Improved Righteous Fury are added in 2.3.2 Thanks :)
@Nayfal This is fixed in 2.3.3, thanks.
And tankpoints too! :) (i mean tooltips)
@Jupei Yes, I do plan to add that feature when I get the time to do so.
Love Tankpoints, always sworn by it.
Any plans in the future for a healpoints-style tooltip that shows a simple green +### or red -### on any item link you view? This would be VERY helpful to me. With all the 5-man instance grinding and green-replacing-epics going on in TBC it would be great to be able to instantly "size-up" a BoE trash drop and just hit need/greed without holding up the group while I use the calculator. I use healpoints on my paladin and tankpoints on my warrior and its just something I always felt was missing from the latter.
This screenshot is what I'm refering to: http://media5.curse-gaming.com/images/previews/8963/healpoints-tooltips.jpg
Thanks, and again, great mod keep up the good work!!
Woot, thanks Whitetooth!
Updated Libs in 2.3.1 should fix those errors
Thanks for the nifty statistical tool. There is however one thing I'm trying to accomplish and I'm not sure if TP supports this or if I'm just not doing it right. Essentially I would like to be able to do an "Equip Compare" between my worn item and something I have not bought, picked up, or bound to myself in order to evaluate in an apples-to-apples way whether or not it represents an upgrade for me in terms of tanking.
i.e. is the So-and-so's Blistering Bracers (armor 80, +5 STR) better than Whatchamacallit's Wristgaurds of Niftiness (armor 85, +3AGI)?
Can I determine this without equipping both items and comparing my total tankpoints? I appreciate any suggestions!
@ conspirator23 Select tank points from the drop down menu and you should be able to open the calculator. This opens a window that shows your current stats and tank points, and then you can raise/lower values to see what your tank points would be with a particular item. There's a screenshot of the calculator above.
Ruknal,
The error u are recieving is the "gratuity" part of ace, not detecting ur shield properly. Unequipping ur shield, removes the error. To fix this update your gratuity library under TankPoints with this new updated one
http://www.wowace.com/files/GratuityLib/GratuityLib-r24423.zip