A few more assertions, including one that I intend to fail, so I can figure out the structure of a table. This revision is NOT being packaged for release, since the forced fail will work on my machine.

QuestHelper/dodads.lua

@@ -1105,6 +1105,10 @@ function QuestHelper:CreateMipmapDodad()
   end
   
   function icon:SetObjective(obj)
+    QuestHelper: Assert(obj.loc, "Objective has no location data.")
+    QuestHelper: Assert(obj.loc.c, "c is nil")
+    QuestHelper: Assert(obj.loc.x, "x is nil")
+    QuestHelper: Assert(obj.loc.y, "y is nil")
     self:SetHeight(20*QuestHelper_Pref.scale)
     self:SetWidth(20*QuestHelper_Pref.scale)
     

QuestHelper/routing_controller.lua

@@ -353,6 +353,12 @@ Route_Core_Init(
     local lt = QuestHelper:CreateTable("route controller path shunt loctable")
     for _, v in ipairs(loctable) do
       QuestHelper: Assert(v.loc)
+      QuestHelper: Assert(type(v.loc) == "table")
+      string indices = ""
+      for k, v in pairs(v.loc) do
+        indices = string.format("%s %s=%s", indices, tostring(k), tostring(v))
+      end
+      QuestHelper: Assert(false, indices)
       table.insert(lt, v.loc)
     end
     QuestHelper: Assert(#loctable == #lt)