Make a function which nukes the saved data for tradeskills. If you're getting an error on opening a tradeskill run that and all should be fixed.

diff --git a/AckisRecipeList.lua b/AckisRecipeList.lua
index 0244315..9e26394 100644
--- a/AckisRecipeList.lua
+++ b/AckisRecipeList.lua
@@ -2539,3 +2539,11 @@ function addon:DumpRecipe(SpellID)
 	end

 end
+
+--Description: Clears all saved tradeskills
+
+function addon:ClearSavedSkills()
+
+	addon.db.profile.tradeskill = {}
+
+end