[+EMU] Floorplan [HELP]

Hello Ragezone,
I use the Plusemu R2, but i have a error with the floorplan editor.
When you edit your room, the next time you enter the room you see a black screen, and the emulator gives the following error:

PHP Code:

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Exception:
System.OverflowException: Arithmetic operation resulted in an overflow.
   at Plus.Communication.Packets.Outgoing.ServerPacket.WriteShort(Int32 s) in C:\Users\\Desktop\Nieuwe  Emu 2\Communication\Packets\Outgoing\ServerPacket.cs:line 76
   at Plus.Communication.Packets.Outgoing.Rooms.Engine.HeightMapComposer..ctor(String Map) in C:\Users\\Desktop\Nieuwe  Emu 2\Communication\Packets\Outgoing\Rooms\Engine\HeightMapComposer.cs:line 45
   at Plus.HabboHotel.Rooms.Room.SendObjects(GameClient Session) in C:\Users\\Desktop\Nieuwe  Emu 2\HabboHotel\Rooms\Room.cs:line 640
   at Plus.Communication.Packets.Incoming.Rooms.Engine.GetRoomEntryDataEvent.Parse(GameClient Session, ClientPacket Packet) in C:\Users\\Desktop\Nieuwe  Emu 2\Communication\Packets\Incoming\Rooms\Engine\GetRoomEntryDataEvent.cs:line 45
   at Plus.Communication.Packets.PacketManager.TryExecutePacket(GameClient Session, ClientPacket Packet) in C:\Users\\Desktop\Nieuwe  Emu 2\Communication\Packets\PacketManager.cs:line 154
   at Plus.HabboHotel.GameClients.GameClient.parser_onNewPacket(ClientPacket Message) in C:\Users\\Desktop\Nieuwe  Emu 2\HabboHotel\GameClients\GameClient.cs:line 65 


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What is the problem, and how do you fix it?
Kind regards,
Lucas.
Sorry for my english, im dutch.