What steps will reproduce the problem?
1. Click Search
2. Click Special Searches
3. Click Disenchant Search

What is the expected output? What do you see instead?

It will search up to a page 14 (In my case, not sure if it's the same for other servers) Filter 1 of 2 for Disenchantable Weapons and thats when the LUA error appears

What version of the product are you using (put the actual number - never say "latest")?

TSM_Shopping r307

Do you have an error log of what happened?

Yes - Posted below

Date: 04/18/12 09:20:27
Message:  ...\AddOns\TradeSkillMaster_Shopping\modules\Search.lua:494 attempt to compare number with nil
Stack:
Interface\AddOns\Auctionator\AtrErrorInspector.lua:101 <AtrErrorInspector.lua:50
...illMaster\Libs\LibAuctionScan-1.0\LibAuctionScan.lua:157 <LibAuctionScan.lua:155
...illMaster\Libs\LibAuctionScan-1.0\LibAuctionScan.lua:148 <LibAuctionScan.lua:130
Locale: enUS
Addons:
    acb_CastBar (11.09.25)
    acb_FlightTimes (09.12.16)
    acb_LootRoll (09.12.16)
    acb_Mirror (11.09.25)
    acb_Swing (10.10.12)
    Altoholic (r117)
    Auc-Advanced (5.14.5268 (KowariOnCrutches))
    Auctionator (3.0.0)
    AutoLagTolerance (0.8)
    AzCastBar (11.09.25)
    AzCastBarOptions (11.09.25)
    BadBoy (v8.043
    BadBoy_CCleaner (v3.28
    BadBoy_Guilded (v1.41
    BagBrother ()
    Bagnon (4.3.11)
    BeanCounter (5.14.5268 (KowariOnCrutches))
    Chatter (v.1.3.3-2-g2d2244c)
    DataStore (r36)
    Dominos (4.3.4)
    DXE (v635-16-gd049fdb)
    Enchantrix (5.14.5268 (KowariOnCrutches))
    GTFO (4.12.3)
    Informant (5.14.5268 (KowariOnCrutches))
    InspectFix (3.1)
    LagBar (v3.0)
    LibBabble-Boss-3.0 (4.3-release13)
    LibBabble-Zone-3.0 (4.3-release13)
    DewdropLib (r324)
    LibInternalCooldowns-1.0 (r31)
    LibStub (1.0.2-40200)
    LibMapData-1.0 (0.21-release)
    LibNameplate-1.0 (1.0.35)
    PaintChipsLib ()
    LibPeriodicTable-3.1 (r373)
    LibSharedMedia-3.0 (4)
    WindowLib ()
    MikScrollingBattleText (5.6.113)
    MoveAnything (12.2.3)
    MSBTOptions ()
    Nameplates ()
    NeedToKnow (4.0.04)
    NiceDamage (20400)
    Omen (v3.1.6)
    OmniCC (4.3.2)
    OmniCC_Config ()
    oRA3 (r523)
    PlateBuffs (1.11.0)
    PocketPlot (2.13.1)
    Postal (v3.4.13
    Recount (v4.3.0d release)
    ShadowedUF_Options (v3.4.4)
    ShadowedUnitFrames (v3.4.4)
    ShadowedUF_Indicators (2.1)
    SimpleTankFrames (r35)
    Stubby (5.14.5268 (KowariOnCrutches))
    TheUndermineJournal (2.2)
    TipTop (2.9.4)
    tullaRange (4.3.1)
    tullaRange_Config ()
    WIM (3.5.8)
    YorsahjPriority (1.4)
    TSM (v1.2.6)
    TSM_Accounting (v1.1)
    TSM_AuctionDB (r159)
    TSM_Auctioning (r507)
    TSM_Crafting (v1.1)
    TSM_Destroying (v1.2)
    TSM_ItemTracker (v1.0.2)
    TSM_Mailing (r89)
    TSM_Shopping (r307)
    TSM_Warehousing (v1.4.5)
    Serenity (1.6b)
    SerenityOptions (1.6b)
    pError (30300.4-Release)

Please provide any additional information below.