Dots Netcode: iOS client build can't add systems to ClientAndServerSimulationGroup

I'm building to iOS, and on program start every system that updates in a Server group or a ClientAndServer group won't load. The systems in ClientSimulationGroup and ClientInitializationGroup work fine. Some of the affected systems are my own but the majority are built into DotsNetcode itself.

Edit: Just wanted to add everything works great in the editor, and I tried adding UNITY_CLIENT to the scripting define symbols, which didn't help.

Here's an example system I created

Code (CSharp):

1. [UpdateInGroup(typeof(ClientAndServerSimulationSystemGroup))]
2.     public class TestSystem : ComponentSystem {
3.         protected override void OnUpdate() {
4.             Debug.Log("Updating");
5.         }
6.     }

Which produces an error in Xcode, and also doesn't print "updating" every frame

Code (CSharp):

1. A system Networking.TestSystem wants to execute in Unity.NetCode.ClientAndServerSimulationSystemGroup but this group has [DisableAutoCreation] and Networking.TestSystem does not. The system will not be added to any group and thus not update.
2. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
3. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
4. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)

Does anyone know how to get this to work?

Here is the full Xcode error output:

Edit: Using netcode 0.5.0

Code (CSharp):

1. A system Unity.NetCode.NetworkStreamCloseSystem wants to execute in Unity.NetCode.ClientAndServerSimulationSystemGroup but this group has [DisableAutoCreation] and Unity.NetCode.NetworkStreamCloseSystem does not. The system will not be added to any group and thus not update.
2.  
3. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
4.  
5. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
6.  
7. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)
8.  
9.  
10. (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
11.  
12.  
13. A system Unity.NetCode.GhostSendSystem wants to execute in Unity.NetCode.ServerSimulationSystemGroup but this group has [DisableAutoCreation] and Unity.NetCode.GhostSendSystem does not. The system will not be added to any group and thus not update.
14.  
15. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
16.  
17. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
18.  
19. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)
20.  
21.  
22. (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
23.  
24.  
25. A system Unity.NetCode.Generated.GhostComponentSerializerRegistrationSystem wants to execute in Unity.NetCode.ClientAndServerInitializationSystemGroup but this group has [DisableAutoCreation] and Unity.NetCode.Generated.GhostComponentSerializerRegistrationSystem does not. The system will not be added to any group and thus not update.
26.  
27. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
28.  
29. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
30.  
31. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)
32.  
33.  
34. (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
35.  
36.  
37. A system Unity.Transforms.Generated.GhostComponentSerializerRegistrationSystem wants to execute in Unity.NetCode.ClientAndServerInitializationSystemGroup but this group has [DisableAutoCreation] and Unity.Transforms.Generated.GhostComponentSerializerRegistrationSystem does not. The system will not be added to any group and thus not update.
38.  
39. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
40.  
41. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
42.  
43. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)
44.  
45.  
46. (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
47.  
48.  
49. A system Networking.ServerDetectDisconnectSystem wants to execute in Unity.NetCode.ServerSimulationSystemGroup but this group has [DisableAutoCreation] and Networking.ServerDetectDisconnectSystem does not. The system will not be added to any group and thus not update.
50.  
51. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
52.  
53. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
54.  
55. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)
56.  
57.  
58. (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
59.  
60.  
61. A system Assembly_CSharp.Generated.GhostComponentSerializerRegistrationSystem wants to execute in Unity.NetCode.ClientAndServerInitializationSystemGroup but this group has [DisableAutoCreation] and Assembly_CSharp.Generated.GhostComponentSerializerRegistrationSystem does not. The system will not be added to any group and thus not update.
62.  
63. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
64.  
65. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
66.  
67. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)
68.  
69.  
70. (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)

 

Update: I've reproduced this issue in an empty project

.

I added a single system:

Code (CSharp):

1. using Unity.Entities;
2. using Unity.NetCode;
3. using UnityEngine;
4.  
5.  
6. [UpdateInGroup(typeof(ClientAndServerSimulationSystemGroup))]
7. public class testsystem : ComponentSystem
8. {
9.     protected override void OnUpdate() {
10.         Debug.Log("Updating test system");
11.     }
12. }
13.  

Building to IOS yields the following in Xcode console:

Code (CSharp):

1. 2020-12-03 12:51:02.970217-0500 NewUnityProject[12310:1297840] Built from '2020.1/staging' branch, Version '2020.1.15f1 (97d0ae02d19d)', Build type 'Release', Scripting Backend 'il2cpp'
2. -> applicationDidFinishLaunching()
3. -> applicationDidBecomeActive()
4. GfxDevice: creating device client; threaded=1
5. Initializing Metal device caps: Apple A12X GPU
6. Initialize engine version: 2020.1.15f1 (97d0ae02d19d)
7. 2020-12-03 12:51:03.168030-0500 NewUnityProject[12310:1298078] fopen failed for data file: errno = 2 (No such file or directory)
8. 2020-12-03 12:51:03.168073-0500 NewUnityProject[12310:1298078] Errors found! Invalidating cache...
9. 2020-12-03 12:51:03.564749-0500 NewUnityProject[12310:1298078] fopen failed for data file: errno = 2 (No such file or directory)
10. 2020-12-03 12:51:03.564799-0500 NewUnityProject[12310:1298078] Errors found! Invalidating cache...
11. 2020-12-03 12:51:03.754291-0500 NewUnityProject[12310:1297840] Unbalanced calls to begin/end appearance transitions for <UnityViewControllerStoryboard: 0x109127200>.
12. UnloadTime: 4.212375 ms
13. TypeManager.Initialize took: 282ms
14. A system Unity.NetCode.NetworkStreamCloseSystem wants to execute in Unity.NetCode.ClientAndServerSimulationSystemGroup but this group has [DisableAutoCreation] and Unity.NetCode.NetworkStreamCloseSystem does not. The system will not be added to any group and thus not update.
15. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
16. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
17. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)
18. (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
19.  
20. A system Unity.NetCode.GhostSendSystem wants to execute in Unity.NetCode.ServerSimulationSystemGroup but this group has [DisableAutoCreation] and Unity.NetCode.GhostSendSystem does not. The system will not be added to any group and thus not update.
21. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
22. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
23. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)
24. (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
25.  
26. A system Unity.NetCode.Generated.GhostComponentSerializerRegistrationSystem wants to execute in Unity.NetCode.ClientAndServerInitializationSystemGroup but this group has [DisableAutoCreation] and Unity.NetCode.Generated.GhostComponentSerializerRegistrationSystem does not. The system will not be added to any group and thus not update.
27. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
28. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
29. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)
30. (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
31.  
32. A system Unity.Transforms.Generated.GhostComponentSerializerRegistrationSystem wants to execute in Unity.NetCode.ClientAndServerInitializationSystemGroup but this group has [DisableAutoCreation] and Unity.Transforms.Generated.GhostComponentSerializerRegistrationSystem does not. The system will not be added to any group and thus not update.
33. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
34. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
35. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)
36. (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
37.  
38. A system testsystem wants to execute in Unity.NetCode.ClientAndServerSimulationSystemGroup but this group has [DisableAutoCreation] and testsystem does not. The system will not be added to any group and thus not update.
39. Unity.Entities.DefaultWorldInitialization:FindGroup(World, Type, Attribute)
40. Unity.Entities.DefaultWorldInitialization:AddSystemToRootLevelSystemGroupsInternal(World, IEnumerable`1, Int32)
41. Unity.Entities.DefaultWorldInitialization:Initialize(String, Boolean)
42. (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 35)
43.  

 

Update: I managed to fix this error. It seems to be an issue with the default bootstrapper. The one listed in the NetCube tutorial didn't work. Here is the bootstrapper I used. Thanks to @florianhanke . Note the #if at the top of the file, to have it only run in IOS builds.

Code (CSharp):

1. #if UNITY_IOS &&  !UNITY_EDITOR
2. using Unity.Entities;
3. using Unity.NetCode;
4. using UnityEngine;
5.  
6.  
7. public class IOsBootstrap : ClientServerBootstrap {
8.  
9.     public override bool Initialize(string defaultWorldName)
10.         {
11.  
12.             Debug.Log("Initializing typemanager");
13.             TypeManager.Initialize();
14.  
15.             Debug.Log("getting all systems");
16.             var systems = DefaultWorldInitialization.GetAllSystems(WorldSystemFilterFlags.Default);
17.      
18.             Debug.Log("generating all system lists");
19.             GenerateSystemLists(systems);
20.  
21.             Debug.Log("creating default world");
22.             var world = new World(defaultWorldName);
23.             World.DefaultGameObjectInjectionWorld = world;
24.  
25.             Debug.Log("Initializing default world");
26.             DefaultWorldInitialization.AddSystemsToRootLevelSystemGroups(world, ExplicitDefaultWorldSystems);
27.      
28.             Debug.Log("updating player loop");
29.             ScriptBehaviourUpdateOrder.UpdatePlayerLoop(world);
30.  
31.             Debug.Log("creating client world");
32.             CreateClientWorld(world, "Client");
33.             return true;
34.         }
35.  
36.  
37. }
38.  
39. #endif