What is the nature of the defect?
Errormessage after switching to mining in GnomwWorks

German Server and Client

What (if anything) triggers the defect?  (happens when loading, when activating the mod, when clicking a particular button, etc)
Switching to Mining

Please post any error messages associated with the defect.
Message: Interface\AddOns\GnomeWorks\GetTradeSkill.lua:89 attempt to compare nil with number
Time: 05/30/10 08:56:49
Count: 1
Stack: Interface\AddOns\GnomeWorks\GetTradeSkill.lua:89 in function <Interface\AddOns\GnomeWorks\GetTradeSkill.lua:86
(tail call): ?
Interface\AddOns\GnomeWorks\plugins\lsw.lua:416 in function `GetTradeSkillData'
Interface\AddOns\GnomeWorks\plugins\lsw.lua:344 in function `func'
Interface\AddOns\GnomeWorks\ScrollFrame.lua:367 in function <Interface\AddOns\GnomeWorks\ScrollFrame.lua:346
Interface\AddOns\GnomeWorks\ScrollFrame.lua:362 in function `UpdateData'
Interface\AddOns\GnomeWorks\ScrollFrame.lua:378 in function `RefreshRows'
Interface\AddOns\GnomeWorks\ScrollFrame.lua:791 in function `Refresh'
Interface\AddOns\GnomeWorks\plugins\lsw.lua:374 in function `RefreshWindow'
...ace\AddOns\LilSparkysWorkshop\lilsparkysworkshop.lua:1238 in function `triggerFunction'
...ace\AddOns\LilSparkysWorkshop\lilsparkysworkshop.lua:2182 in function <...ace\AddOns\LilSparkysWorkshop\lilsparkysworkshop.lua:2174

Locals: self = <table> {
 RecipeGroupPruneList = <function> defined @Interface\AddOns\GnomeWorks\RecipeGroups.lua:595
 ToggleTradeSkillOptionDropDown = <function> defined @Interface\AddOns\GnomeWorks\RecipeGroups.lua:849
 CancelTimer = <function> defined @Interface\AddOns\Alt-Tab_Toggle\Libs\AceTimer-3.0\AceTimer-3.0.lua:311
 RecipeGroupAddSubGroup = <function> defined @Interface\AddOns\GnomeWorks\RecipeGroups.lua:196
 InventoryScan = <function> defined @Interface\AddOns\GnomeWorks\Inventory.lua:347
 SetInventoryCount = <function> defined @Interface\AddOns\GnomeWorks\Inventory.lua:284
 TRADE_SKILL_UPDATE = <function> defined @Interface\AddOns\GnomeWorks\MainWindow.lua:930
 MERCHANT_UPDATE = <function> defined @Interface\AddOns\GnomeWorks\Inventory.lua:93
 GetTradeIcon = <function> defined @Interface\AddOns\GnomeWorks\GetTradeSkill.lua:155
 QueueWindow = GnomeWorksQueueFrame {
 }
 RecipeGroupPasteEntry = <function> defined @Interface\AddOns\GnomeWorks\RecipeGroups.lua:236
 ScheduleTimer = <function> defined @Interface\AddOns\Alt-Tab_Toggle\Libs\AceTimer-3.0\AceTimer-3.0.lua:276
 ShowReagents = <function> defined @Interface\AddOns\GnomeWorks\Details.lua:221
 AddToQueue = <function> defined @Interface\AddOns\GnomeWorks\Queue.lua:594
 RegisterMessage = <function> defined @Interface\AddOns\Ailo\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:117
 UnregisterMessage = <function> defined @Interface\AddOns\Ailo\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:180
 data = <table> {
 }
 RecipeGroupSort = <function> defined @Interface\AddOns\GnomeWorks\RecipeGroups.lua:413
 SetFilterText = <function> defined @Interface\AddOns\GnomeWorks\MainWindow.lua:944
 PopSelection = <function> defined @Interface\AddOns\GnomeWorks\SkillList.lua:380
 ExpandAllHeaders = <function> defined @Interface\AddOns\GnomeWorks\ScrollFrame.lua:568
 RecipeGroupOpRename = <function> defined @Interface\AddOns\GnomeWorks\RecipeGroups.lua:1007
 GetTradeSkillIcon = <function> defined @Interface\AddOns\GnomeWorks\GetTradeSkill.lua:196
 ConstructPseudoTrades = <function> defined @Interface\AddOns\GnomeWorks\GetTradeSkill.lua:57
 IsTradeSkillLinked = <function> defined @Interface\AddOns\GnomeWorks\GetTradeSkill.lua:196
 OnLoad = <function> defined @Interface\AddOns\GnomeWorks\GnomeWorks.lua:97
 DoTradeSkillUpdate = <function> defined @Interface\AddOns\GnomeWorks\MainWindow.lua:871
 ParseSkillList = <function> defined @Interface\AddOns\GnomeWorks\SkillList.lua:213
 RecipeGroupNew = <function> defined @Interface\AddOns\GnomeWorks\RecipeGroups.lua:68
 RecipeGroupOpNew = <function> defined @Interface\AddOns\GnomeWorks\RecipeGroups.lua:926
 GetSkillColor = <function> defined @Interface\AddOns\GnomeWorks\SkillList.lua:746
 CreateQueueWindow = <function> defined @Interface\AddOns\GnomeWorks\Queue.lua:816
 RecipeGroupFindRecipe = <function> defined @Interface\AddOns\GnomeWorks\RecipeGroups.lua:45
 UnregisterAllEvents = <function> defined @Interface\Ad