Oops, couple of errors that made it not work even on my machine (and I don't have any Alterac related quests).

QuestHelper/dodads.lua

@@ -1057,7 +1057,7 @@ function QuestHelper:CreateMipmapDodad()
       QuestHelper: Assert(self, "Missing self.") -- Yeah right.
       QuestHelper: Assert(self.obj, "Missing objective.")
       QuestHelper: Assert(self.obj.loc, "Missing Location.")
-      local locarray = convertLocation(self.obj.loc)
+      local locarray = {convertLocation(self.obj.loc)}
       QuestHelper: Assert(locarray, "Hmm, we aren't getting anything from the function... Why?")
       QuestHelper: Assert(locarray[1] and locarray[2] and locarray[3] and locarray[4], "Location conversion failed. " .. tostring(locarray[1]) .. " " .. tostring(locarray[2]) .. " " .. tostring(locarray[3]) .. " " .. tostring(locarray[4]))
 

QuestHelper/routing_core.lua

@@ -1254,7 +1254,7 @@ function QH_Route_Core_ClusterAdd(clust, clustid_used)
   
   -- if we're doing hackery, clust will just be an empty table and we'll retrofit stuff later
   for _, v in ipairs(clust) do
-    if v.loc.p == 26 then v.loc.p == 48 end -- Somehow I doubt this is the problem location, but it IS a nice place to make a translation.
+    if v.loc.p == 26 then v.loc.p = 48 end -- Somehow I doubt this is the problem location, but it IS a nice place to make a translation.
     local idx = QH_Route_Core_NodeAdd_Internal(v)
     Storage_NodeAdded(idx)
     ClusterLookup[idx] = clustid