diff --git a/lua/advdupe2/sh_codec.lua b/lua/advdupe2/sh_codec.lua
index 854a36c..0fe621f 100644
--- a/lua/advdupe2/sh_codec.lua
+++ b/lua/advdupe2/sh_codec.lua
@@ -10,6 +10,7 @@
 
 local REVISION = 5
 AdvDupe2.CodecRevision = REVISION
+AdvDupe2.MaxDupeSize = 32e6 -- 32 MB
 
 include( "sh_codec_legacy.lua" )
 AddCSLuaFile( "sh_codec_legacy.lua" )
@@ -411,12 +412,12 @@ end
 
 versions[4] = function(encodedDupe)
 	local info, dupestring = getInfo(encodedDupe:sub(7))
-	return deserialize(decompress(dupestring), read4), info
+	return deserialize(decompress(dupestring, AdvDupe2.MaxDupeSize), read4), info
 end
 
 versions[5] = function(encodedDupe)
 	local info, dupestring = getInfo(encodedDupe:sub(7))
-	return deserialize(decompress(dupestring), read5), info
+	return deserialize(decompress(dupestring, AdvDupe2.MaxDupeSize), read5), info
 end
 
 function AdvDupe2.CheckValidDupe(dupe, info)
@@ -508,11 +509,8 @@ function AdvDupe2.Decode(encodedDupe)
 		if success then
 			success, tbl = AdvDupe2.CheckValidDupe(tbl, info)
 		end
-
 		if success then
 			info.revision = rev
-		else
-			ErrorNoHalt(tbl)
 		end
 
 		return success, tbl, info
diff --git a/lua/advdupe2/sv_file.lua b/lua/advdupe2/sv_file.lua
index 7e155a5..cf6e8d4 100644
--- a/lua/advdupe2/sv_file.lua
+++ b/lua/advdupe2/sv_file.lua
@@ -37,6 +37,11 @@ concommand.Add("AdvDupe2_SaveFile", SaveFile)
 
 function AdvDupe2.SendToClient(ply, data, autosave)
 	if(not IsValid(ply))then return end
+	if #data > AdvDupe2.MaxDupeSize then
+		AdvDupe2.Notify(ply,"Copied duplicator filesize is too big!",NOTIFY_ERROR)
+		return
+	end
+
 	ply.AdvDupe2.Downloading = true
 	AdvDupe2.InitProgressBar(ply,"Saving:")
 
diff --git a/lua/weapons/gmod_tool/stools/advdupe2.lua b/lua/weapons/gmod_tool/stools/advdupe2.lua
index e86143d..54a47d7 100644
--- a/lua/weapons/gmod_tool/stools/advdupe2.lua
+++ b/lua/weapons/gmod_tool/stools/advdupe2.lua
@@ -835,6 +835,10 @@ if(SERVER) then
 
 		Tab.Map = true
 		AdvDupe2.Encode( Tab, AdvDupe2.GenerateDupeStamp(ply), function(data)
+			if #data > AdvDupe2.MaxDupeSize then
+				AdvDupe2.Notify(ply, "Copied duplicator filesize is too big!",NOTIFY_ERROR)
+				return 
+			end
 			if(not file.IsDir("advdupe2_maps", "DATA")) then
 				file.CreateDir("advdupe2_maps")
 			end