As mentioned in the comments i get instantly disconnected from the server as soon as i try to place any of the modded blocks.

This is the corresponding part from the log:


2019-03-02 17:59:52.103 - Thread: 1 -> No definition 'MyObjectBuilder_CubeBlock/(null)'. Maybe a mistake in XML?
2019-03-02 17:59:52.126 - Thread: 1 -> Exception occured: System.NullReferenceException: Object reference not set to an instance of an object.
at Sandbox.Game.Entities.MyCubeGrid.BuildBlocksRequest(UInt32 colorMaskHsv, HashSet`1 locations, Int64 builderEntityId, Boolean instantBuild, Int64 ownerId)
at VRage.Network.CallSite`7.Invoke(BitStream stream, Object obj, Boolean validate)
at VRage.Network.MyReplicationLayer.Invoke(CallSite callSite, BitStream stream, Object obj, EndpointId source, MyClientStateBase clientState, Boolean validate)
at VRage.Network.MyReplicationServer.OnEvent(MyPacketDataBitStreamBase data, CallSite site, Object obj, IMyNetObject sendAs, Nullable`1 position, EndpointId source)
at VRage.Network.MyReplicationLayer.OnEvent(MyPacketDataBitStreamBase data, NetworkId networkId, NetworkId blockedNetId, UInt32 eventId, EndpointId sender, Nullable`1 position)
at VRage.Network.MyReplicationLayer.ProcessEvent(MyPacketDataBitStreamBase data, EndpointId sender)
at VRage.Network.MyReplicationLayer.OnEvent(MyPacket packet)
at Sandbox.Engine.Multiplayer.MyTransportLayer.ProcessMessage(MyPacket p)
at Sandbox.Engine.Multiplayer.MyTransportLayer.HandleMessage(MyPacket p)
at Sandbox.Engine.Networking.MyReceiveQueue.Process(NetworkMessageDelegate handler)
2019-03-02 17:59:52.127 - Thread: 1 -> Packet processing error, disconnecting 76561198009462965
2019-03-02 17:59:52.156 - Thread: 1 -> User left Jel