View difference between Paste ID: dUh038df and vQGyMpUY

 --[[ Code by NeverCast
      This should be loaded like a typical api
      Feel free to name it what you like
 --]]
 local directions = { [0]=0,[1]=1,[2]=2,[3]=3,[4]=4,[5]=5,["down"] = 0, ["up"] = 1, ["-Z"] = 2, ["+Z"] = 3, ["-X"] = 4, ["+X"] = 5, ["+Y"] = 1, ["-Y"] = 0}
 directions.south = directions["+Z"]
 directions.east = directions["+X"]
 directions.north = directions["-Z"]
 directions.west = directions["-X"]
 
 -- Gets the Unique ID based on the ID and Meta
 function getID(id, meta)
   if meta == nil then
     meta = 27268
   else
     meta = bit.bxor(meta, 0x6E6C)
   end
   local uuid = bit.bxor(id, 0x4F89) * 0x8000 + bit.bxor(meta, 0x3A69)
   return uuid
 end
 
 -- Get a stack table from a single uuid and amount
 -- This does all the math to reverse the unique ID algorithm that RG wrote.
 -- Valid for version 2.3
 function getStack(uuid, c)
         -- Reverse RG's fancy math
-        local subt = bit.band(uuid, 0xffff)
+        local subt = bit.band(uuid, 0x7fff)
         local dexorm = bit.bxor(subt, 0x3a69)
         local metadata = nil
         if dexorm ~= 28262 then -- item takes dmg
                 metadata = bit.bxor(dexorm, 0x6e6c)
         end
         local id = bit.bxor((uuid-subt)/0x8000, 0x4f89)
         -- put it in to a nice table
         local stack = {}
         stack.amount = c
         stack.id = id
         stack.meta = metadata
         return stack
 end
 
 -- Get stacks from an Interactive Sorter
 -- direction   : the direction of the Interactive Sorter Peripheral
 -- invDirection: the direction of the inventory from the peripheral
 -- valid options for invDirection are 0,1,2,3,4,5 ( original values),
 -- north, south, east, west, up, down, and the +/-X,Y,Z strings.
 -- (see directions variable)
 function getStacks(direction, invDirection)
         if not peripheral.isPresent(direction) then
                 return false, "No Peripheral"
         end
         if peripheral.getType(direction) ~= "interactiveSorter" then
                 return false, "Not a sorter"
         end
         local stacks = {}
         for uuid,count in pairs(peripheral.call(direction, "list", directions[invDirection])) do
                 table.insert(stacks, getStack(uuid, count))
         end
         return true, stacks
 end