Error occurs when opening a Professions Window. Bug report as follows:

5x Carbonite.Warehouse/NxWarehouse.lua:3490: attempt to call field 'GetTradeSkillLine' (a nil value)
[string "@Carbonite.Warehouse/NxWarehouse.lua"]:3490: in function `func'
[string "@Ace3/AceTimer-3.0-17/AceTimer-3.0.lua"]:57: in function <Ace3/AceTimer-3.0/AceTimer-3.0.lua:50>

Locals:
self =

{
OnButToggleWarehouse = defined @Carbonite.Warehouse/NxWarehouse.lua:3514
AddBag = defined @Carbonite.Warehouse/NxWarehouse.lua:2966
OnLoot_opened = defined @Carbonite.Warehouse/NxWarehouse.lua:3226
CaptureGet = defined @Carbonite.Warehouse/NxWarehouse.lua:3305
OnUnit_spellcast_succeeded = defined @Carbonite.Warehouse/NxWarehouse.lua:1125
OnItem_lock_changed = defined @Carbonite.Warehouse/NxWarehouse.lua:2831
UpdateItem = defined @Carbonite.Warehouse/NxWarehouse.lua:2239
CaptureItems = defined @Carbonite.Warehouse/NxWarehouse.lua:2895
ToggleShow = defined @Carbonite.Warehouse/NxWarehouse.lua:1445
OnGuildbankframe_closed = defined @Carbonite.Warehouse/NxWarehouse.lua:2737
ImportDo = defined @Carbonite.Warehouse/NxWarehouse.lua:1385
AddLink = defined @Carbonite.Warehouse/NxWarehouse.lua:2984
Menu_OnRemoveChar = defined @Carbonite.Warehouse/NxWarehouse.lua:1348
Menu_OnShowItemCat = defined @Carbonite.Warehouse/NxWarehouse.lua:1414
UpdateBlank = defined @Carbonite.Warehouse/NxWarehouse.lua:1920
Menu_OnSortByRarity = defined @Carbonite.Warehouse/NxWarehouse.lua:1419
OnTime_played_msg = defined @Carbonite.Warehouse/NxWarehouse.lua:1102
TooltipProcess = defined @Carbonite.Warehouse/NxWarehouse.lua:2646
Menu_OnSortBySlot = defined @Carbonite.Warehouse/NxWarehouse.lua:1428
Menu_OnSyncAccount = defined @Carbonite.Warehouse/NxWarehouse.lua:1407
DurTooltipFrm = NxTooltipD {
}
OnChat_msg_skill = defined @Carbonite.Warehouse/NxWarehouse.lua:3318
OnBankframe_closed = defined @Carbonite.Warehouse/NxWarehouse.lua:2719
RecordCharacter = defined @Carbonite.Warehouse/NxWarehouse.lua:3547
ReftipProcess = defined @Carbonite.Warehouse/NxWarehouse.lua:2607
ExportDo = defined @Carbonite.Warehouse/NxWarehouse.lua:1400
LootItems = {
}
Menu_OnExport = defined @Carbonite.Warehouse/NxWarehouse.lua:1395
FindCharsWithItem = defined @Carbonite.Warehouse/NxWarehouse.lua:2340
ScanRBank = defined @Carbonite.Warehouse/NxWarehouse.lua:2957
OnLoot_slot_cleared = defined @Carbonite.Warehouse/NxWarehouse.lua:3243
OnItemListEvent = defined @Carbonite.Warehouse/NxWarehouse.lua:1556
OnUnit_inventory_changed = defined @Carbonite.Warehouse/NxWarehouse.lua:3006
InitWarehouseCharacter = defined @Carbonite.Warehouse/NxWarehouse.lua:3518
ConvertData = defined @Carbonite.Warehouse/NxWarehouse.lua:900
UpdateGuild = defined @Carbonite.Warehouse/NxWarehouse.lua:1927
prtdb = defined @Carbonite.Warehouse/NxWarehouse.lua:1216
OnEditBox = defined @Carbonite.Warehouse/NxWarehouse.lua:1465
CaptureUpdate = defined @Carbonite.Warehouse/NxWarehouse.lua:2882
CaptureInvDurabilityTimer = defined @Carbonite.Warehouse/NxWarehouse.lua:3166
UpdateItems = defined @Carbonite.Warehouse/NxWarehouse.lua:1992
UpdateProfessions = defined @Carbonite.Warehouse/NxWarehouse.lua:2490
OnListEvent = defined @Carbonite.Warehouse/NxWarehouse.lua:1476
OnTrade_skill_update = defined @