Corrupted player data on host.
NullReferenceException: Object reference not set to an instance of an object
at GameManager.PlayerId (System.Int32 _playerId, System.Int32 _teamNumber, PlayerDataFile _playerDataFile, System.Int32 _chunkViewDim) [0x0005d] in <d7dcfa4979674f179c13273f8b30b551>:0
at NetPackagePlayerId.ProcessPackage (World _world, GameManager _callbacks) [0x00000] in <d7dcfa4979674f179c13273f8b30b551>:0
at ConnectionManager.ProcessPackages (INetConnection _connection, NetPackageDirection _disallowedDirection, ClientInfo _clientInfo) [0x000c8] in <d7dcfa4979674f179c13273f8b30b551>:0
at ConnectionManager.Update () [0x0016a] in <d7dcfa4979674f179c13273f8b30b551>:0
Host will need to go into the Players folder inside of the Save folder for that game, and delete your files. Should be something like EOS_0002e19bdc834556b5c5dc8bc1a41dbe.ttp and .ttp.bak