Building Blocks Rearranged

[Blasteh]

Hi,
Sometimes a user will leave the room, then just come back to their room and the building blocks will be rearranged for some reason.

Exception logged 1/15/2018 12:03:26 PM in Room.SendMessage:
System.NullReferenceException: Object reference not set to an instance of an object.
   at Plus.HabboHotel.Rooms.Room.SendMessage(IServerPacket Message, Boolean UsersWithRightsOnly) in C:\Users\Administrator\Desktop\Emulator\HabboHotel\Rooms\Room.cs:line 910
Source:
Plus Emulator
Data:
Message:
Object reference not set to an instance of an object.
Stack trace:
   at Plus.HabboHotel.Rooms.Room.SendMessage(IServerPacket Message, Boolean UsersWithRightsOnly) in C:\Users\Administrator\Desktop\Emulator\HabboHotel\Rooms\Room.cs:line 910





Exception logged 1/18/2018 2:59:14 PM in Room.SendMessage:
System.NullReferenceException: Object reference not set to an instance of an object.
   at Plus.HabboHotel.Rooms.Room.SendMessage(IServerPacket Message, Boolean UsersWithRightsOnly) in C:\Users\Administrator\Desktop\Emulator\HabboHotel\Rooms\Room.cs:line 910
Source:
Plus Emulator
Data:
Message:
Object reference not set to an instance of an object.
Stack trace:
   at Plus.HabboHotel.Rooms.Room.SendMessage(IServerPacket Message, Boolean UsersWithRightsOnly) in C:\Users\Administrator\Desktop\Emulator\HabboHotel\Rooms\Room.cs:line 910





Exception logged 1/19/2018 6:56:29 PM in Room.SendMessage:
System.NullReferenceException: Object reference not set to an instance of an object.
   at Plus.HabboHotel.Rooms.Room.SendMessage(IServerPacket Message, Boolean UsersWithRightsOnly) in C:\Users\Administrator\Desktop\Emulator\HabboHotel\Rooms\Room.cs:line 910
Source:
Plus Emulator
Data:
Message:
Object reference not set to an instance of an object.
Stack trace:
   at Plus.HabboHotel.Rooms.Room.SendMessage(IServerPacket Message, Boolean UsersWithRightsOnly) in C:\Users\Administrator\Desktop\Emulator\HabboHotel\Rooms\Room.cs:line 910

Unsure if that's the error, but that popped up in exceptions