Resolves issue 551. Apparently at times, when the link is nil, the item name is nil too. Made the checks more aggressive to attempt to find the problem. Dunno why Blizzard is returning nil on the culprits when looting, but hopefully they're returning at least the texture.

QuestHelper/collect_loot.lua

@@ -530,7 +530,7 @@ local function LootOpened()
   local items = {}
   items[PseudoIDs["gold"]] = 0
   for i = 1, GetNumLootItems() do
-    _, name, quant, _ = GetLootSlotInfo(i)
+    tex, name, quant, _ = GetLootSlotInfo(i)
     link = GetLootSlotLink(i)
     if quant == 0 then
       -- moneys
@@ -548,7 +548,20 @@ local function LootOpened()
         end
         items[QHC.PseudoIDs[name]] = (items[QHC.PseudoIDs[name]] or 0) + quant
       else
-        QuestHelper:Assert(link, "Need more info on '" .. name .. "'x" .. tostring(quant) .. ".")
+        if not link and not name then
+          local msg = "Texture is " .. tostring(tex) .. " with a quantity of " .. tostring(quant) .. "."
+          if LootSlotIsCoin(i) then
+            QuestHelper:Assert(false, "Loot is coin. " .. msg)
+          elseif LootSlotIsItem(i) then
+            QuestHelper:Assert(false, "Loot is item. " .. msg)
+          else
+            QuestHelper:Assert(false, "Loot is ???. " .. msg)
+          end
+        elseif not link then
+          QuestHelper:Assert(link, "Need more info on '" .. name .. "'x" .. tostring(quant) .. ".")
+        elseif not name then
+          QuestHelper:Assert(name, "Need more info on '" .. link .. "'x" .. tostring(quant) .. ".")
+        end
         local itype = GetItemType(link)
         items[itype] = (items[itype] or 0) + quant
       end