YAML Class ID Reference

Recently have encountered "Could not produce class with ID 255" runtime error. The project enables "Strip Engine Code". I have searched through YAML Class ID Reference documentation but couldn't find class name that has ID of 255. Could someone help me find this class name? Even for future reference, it would help if someone can tell me how I would find these class IDs that are not documented.

 

I have a similar issue, but for ID 331. What class has ID 331? The docs do not contain a reference to it.

 

Thank you very much!

 

@superpig The YAML Reference page doesn't seem very up to date. I couldn't find SpiteMask in there. Right now I have the problem of my Standalone app to not produce class ID 362. Is it possible to look them all up by myself, or is this the post to ask for missing IDs?

Ayways, what is 362?

 

Thanks a bunch, that was it. Where did you get the information?
Is it considered a bug that having one in the scene and building for Windows Standalone for server purposes generates the error "Could not produce class with ID 362" and crashes with crash dump on closing?

 

How can we get the missing IDs by ourselves when it's not documented ?

 

Seems the crash does not come from the Wo

That was the last answer to my questions thanks

 

Alternatively, if you force text serialization, you can search your way to the problematic class, which is what I usually do.

Code (CSharp):

1. $ ag -G "\.(unity|prefab|asset)$" -C 2 -w "331" Assets/
2. Assets/Game/Something/MyScene.unity
3. 15723-  m_RootOrder: 4
4. 15724-  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
5. 15725:--- !u!331 &1229346169
6. 15726-SpriteMask:
7. 15727-  m_ObjectHideFlags: 0
8.  

And bam - there we go, 331 is SpriteMask. This is probably less reliable than using reflection, but much much faster, and so far has always worked for me

 

Awesome, two solutions at once.

 

Hi,
I've used reflection and FindTypeByPersistentTypeID to find the names of most classes I needed, but there is one special class, which name is different (I guess) in the Editor and in iOS. It's class id 91. FindTypeByPersistentTypeID returns "AnimatorController", but this class is only available in the Editor and I guess id 91 is being assigned to another class when exporting for iOS. Unfortunately, FindTypeByPersistentTypeID can be called only in the Editor, so I can't see which class is assigned to id 91 during runtime. Can you help?
Or maybe there is AnimatorController, but it is not in the default UnityEngine namespace? The docs don't say anything.

 

At runtime, AnimatorControllers are represented as a RuntimeAnimatorController. It might be that?

 

When I put UnityEngine.RuntimeAnimatorController in link.xml it still reports that class id 91 is missing.

 

@MacroPinch I don't think it's reassigned by a different class. Even the call FindTypeByPersistentTypeID has "persistent" in it. How persistent would that be if 91 would be some other class all of a sudden. The closest explanation I have for that is. All classes get an ID assigned to them that stays that way and if the class is stripped out, so be it.

 

I've tried putting several combinations, which include AnimatorController in link.xml, but still get the following warning:

Could not produce class with ID 91.
This could be caused by a class being stripped from the build even though it is needed. Try disabling 'Strip Engine Code' in Player Settings.

This is Unity 2018.1.6f1

Here's my link.xml:

<linker>
<assembly fullname="UnityEngine">
<type fullname="UnityEngine.Avatar" preserve="all"/>
<type fullname="UnityEngine.Rendering.SortingGroup" preserve="all"/>
<type fullname="UnityEngine.FlareLayer" preserve="all"/>
<type fullname="UnityEngine.U2D.SpriteAtlas" preserve="all"/>

<type fullname="UnityEditor.Animations.AnimatorController" preserve="all"/>
<type fullname="UnityEditor.AnimatorController" preserve="all"/>
<type fullname="UnityEngine.Animations.AnimatorController" preserve="all"/>
<type fullname="UnityEngine.AnimatorController" preserve="all"/>
</assembly>
</linker>

 

Also tried creating another assembly element for Unity editor

<assembly fullname="UnityEditor">
<type fullname="UnityEditor.Animations.AnimatorController" preserve="all"/>
</assembly>

but then the export fails with an exception

Failed running /Applications/Unity/Unity.app/Contents/il2cpp/build/UnityLinker.exe --api=NET_4_6 -out="/Users/batko/Projects/project9/unity/Temp/StagingArea/Data/Managed/tempStrip" -l=none -c=link --link-symbols -x="/Applications/Unity/PlaybackEngines/iOSSupport/Whitelists/Core.xml" -f="/Applications/Unity/Unity.app/Contents/il2cpp/LinkerDescriptors" -x "/Users/batko/Projects/project9/unity/Temp/StagingArea/Data/Managed/../platform_native_link.xml" -x "/var/folders/f_/sgs_gnxd1m12fmdzscgtwfw80000gn/T/tmp6570e755.tmp" -x "/var/folders/f_/sgs_gnxd1m12fmdzscgtwfw80000gn/T/tmp1cd467d3.tmp" -x "/var/folders/f_/sgs_gnxd1m12fmdzscgtwfw80000gn/T/tmp59f592a7.tmp" -x "/Applications/Unity/Unity.app/Contents/il2cpp/LinkerDescriptors/System45.xml" -x "/Applications/Unity/Unity.app/Contents/il2cpp/LinkerDescriptors/mscorlib45.xml" -x "/Users/batko/Projects/project9/unity/Assets/link.xml" -d "/Users/batko/Projects/project9/unity/Temp/StagingArea/Data/Managed" -a "/Users/batko/Projects/project9/unity/Temp/StagingArea/Data/Managed/Assembly-CSharp.dll" -a "/Users/batko/Projects/project9/unity/Temp/StagingArea/Data/Managed/Unity.TextMeshPro.dll" -a "/Users/batko/Projects/project9/unity/Temp/StagingArea/Data/Managed/UnityEngine.UI.dll" -a "/Users/batko/Projects/project9/unity/Temp/StagingArea/Data/Managed/NestedPrefabs.dll" -a "/Users/batko/Projects/project9/unity/Temp/StagingArea/Data/Managed/DOTween.dll" -a "/Users/batko/Projects/project9/unity/Temp/StagingArea/Data/Managed/Rewired_Core.dll"

stdout:
Fatal error in Unity CIL Linker
Mono.Linker.Steps.XmlResolutionException: Unable to find the file for the assembly named 'UnityEditor, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' specified in link file '/Users/batko/Projects/project9/unity/Assets/link.xml'. Should this assembly be in the project? Use the 'ignoreIfMissing="1"' attribute if this assembly may not always exist. ---> Mono.Cecil.AssemblyResolutionException: Failed to resolve assembly: 'UnityEditor, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' ---> Mono.Cecil.AssemblyResolutionException: Failed to resolve assembly: 'UnityEditor, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'
at Unity.Linker.LocalDirectoryAssemblyResolver.Resolve (Mono.Cecil.AssemblyNameReference name, Mono.Cecil.ReaderParameters parameters) [0x00076] in <f8d0909297b849a9be283c981f3ca21a>:0
at Unity.Linker.UnityAssemblyResolver.Resolve (Mono.Cecil.AssemblyNameReference name, Mono.Cecil.ReaderParameters parameters) [0x0001a] in <f8d0909297b849a9be283c981f3ca21a>:0
at Mono.Linker.LinkContext.Resolve (Mono.Cecil.IMetadataScope scope) [0x00009] in <595db02836e14929974068a4ba156176>:0
--- End of inner exception stack trace ---
at Mono.Linker.LinkContext.Resolve (Mono.Cecil.IMetadataScope scope) [0x00048] in <595db02836e14929974068a4ba156176>:0
at Mono.Linker.Steps.ResolveFromXmlStep.GetAssembly (Mono.Linker.LinkContext context, Mono.Cecil.AssemblyNameReference assemblyName) [0x00001] in <595db02836e14929974068a4ba156176>:0
at Unity.Linker.Steps.UnityResolveFromXmlStep.ProcessAssemblies (Mono.Linker.LinkContext context, System.Xml.XPath.XPathNodeIterator iterator) [0x00015] in <f8d0909297b849a9be283c981f3ca21a>:0
--- End of inner exception stack trace ---
at Unity.Linker.Steps.UnityResolveFromXmlStep.ProcessAssemblies (Mono.Linker.LinkContext context, System.Xml.XPath.XPathNodeIterator iterator) [0x00073] in <f8d0909297b849a9be283c981f3ca21a>:0
at Mono.Linker.Steps.ResolveFromXmlStep.Process () [0x0003f] in <595db02836e14929974068a4ba156176>:0
at Mono.Linker.Steps.BaseStep.Process (Mono.Linker.LinkContext context) [0x00018] in <595db02836e14929974068a4ba156176>:0
at Mono.Linker.Pipeline.Process (Mono.Linker.LinkContext context) [0x00020] in <595db02836e14929974068a4ba156176>:0
at Unity.Linker.UnityDriver.Run () [0x00086] in <f8d0909297b849a9be283c981f3ca21a>:0
at Unity.Linker.UnityDriver.RunDriverWithoutErrorHandling () [0x00001] in <f8d0909297b849a9be283c981f3ca21a>:0

at Unity.Linker.UnityDriver.RunDriver () [0x00002] in <f8d0909297b849a9be283c981f3ca21a>:0
stderr:
UnityEngine.Debug:LogError(Object)
UnityEditorInternal.Runner:RunProgram(Program, String, String, String, CompilerOutputParserBase) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:128)
UnityEditorInternal.Runner:RunManagedProgram(String, String, String, CompilerOutputParserBase, Action`1) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:73)
UnityEditorInternal.AssemblyStripper:RunAssemblyLinker(IEnumerable`1, String&, String&, String, String) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:89)
UnityEditorInternal.AssemblyStripper:StripAssembliesTo(String[], String[], String, String, String&, String&, String, IIl2CppPlatformProvider, IEnumerable`1) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:82)
UnityEditorInternal.AssemblyStripper:RunAssemblyStripper(IEnumerable, String, String[], String[], String, IIl2CppPlatformProvider, RuntimeClassRegistry) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:203)
UnityEditorInternal.AssemblyStripper:StripAssemblies(String, IIl2CppPlatformProvider, RuntimeClassRegistry) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:113)
UnityEditorInternal.IL2CPPBuilder:Run() (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:154)
UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, String, IIl2CppPlatformProvider, Action`1, RuntimeClassRegistry) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:35)
UnityEditor.DefaultBuildMethods:BuildPlayer(BuildPlayerOptions)
UnityEditorHelper.BundleManager:<startup>b__5_0(BuildPlayerOptions)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr)






Exception: /Applications/Unity/Unity.app/Contents/il2cpp/build/UnityLinker.exe did not run properly!
UnityEditorInternal.Runner.RunProgram (UnityEditor.Utils.Program p, System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:130)
UnityEditorInternal.Runner.RunManagedProgram (System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser, System.Action`1[T] setupStartInfo) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:73)
UnityEditorInternal.AssemblyStripper.RunAssemblyLinker (System.Collections.Generic.IEnumerable`1[T] args, System.String& out, System.String& err, System.String linkerPath, System.String workingDirectory) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:89)
UnityEditorInternal.AssemblyStripper.StripAssembliesTo (System.String[] assemblies, System.String[] searchDirs, System.String outputFolder, System.String workingDirectory, System.String& output, System.String& error, System.String linkerPath, UnityEditorInternal.IIl2CppPlatformProvider platformProvider, System.Collections.Generic.IEnumerable`1[T] additionalBlacklist) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:82)
UnityEditorInternal.AssemblyStripper.RunAssemblyStripper (System.Collections.IEnumerable assemblies, System.String managedAssemblyFolderPath, System.String[] assembliesToStrip, System.String[] searchDirs, System.String monoLinkerPath, UnityEditorInternal.IIl2CppPlatformProvider platformProvider, UnityEditor.RuntimeClassRegistry rcr) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:203)
UnityEditorInternal.AssemblyStripper.StripAssemblies (System.String managedAssemblyFolderPath, UnityEditorInternal.IIl2CppPlatformProvider platformProvider, UnityEditor.RuntimeClassRegistry rcr) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/AssemblyStripper.cs:113)
UnityEditorInternal.IL2CPPBuilder.Run () (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:154)
UnityEditorInternal.IL2CPPUtils.RunIl2Cpp (System.String tempFolder, System.String stagingAreaData, UnityEditorInternal.IIl2CppPlatformProvider platformProvider, System.Action`1[T] modifyOutputBeforeCompile, UnityEditor.RuntimeClassRegistry runtimeClassRegistry) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:35)
UnityEditor.iOS.PostProcessiPhonePlayer.CrossCompileManagedDlls (UnityEditor.iOS.PostProcessiPhonePlayer+BuildSettings bs, UnityEditor.iOS.PostProcessiPhonePlayer+ProjectPaths paths, UnityEditor.AssemblyReferenceChecker checker, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport buildReport) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/Common/BuildPostProcessor.cs:801)
UnityEditor.iOS.PostProcessiPhonePlayer.PostProcess (UnityEditor.iOS.PostProcessiPhonePlayer+BuildSettings bs, UnityEditor.iOS.PostProcessiPhonePlayer+ProjectPaths paths, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport buildReport) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/Common/BuildPostProcessor.cs:637)
UnityEditor.iOS.PostProcessiPhonePlayer.PostProcess (UnityEditor.iOS.PostProcessorSettings postProcessorSettings, UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/Common/BuildPostProcessor.cs:590)
UnityEditor.iOS.iOSBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/Common/ExtensionModule.cs:37)
UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at /Users/builduser/buildslave/unity/build/Editor/Mono/Modules/DefaultBuildPostprocessor.cs:27)
UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:285)
UnityEditor.DefaultBuildMethods:BuildPlayer(BuildPlayerOptions)
UnityEditorHelper.BundleManager:<startup>b__5_0(BuildPlayerOptions)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr)

 

This happens during the initialization of of the app. More specifically while loading an asset bundle, which contains prefabs and scriptable objects.

 

I found this information that helped me fix a similar issue, related to class ID 91:
https://forum.unity.com/threads/asset-bundle-and-code-stripping.380619/#post-2474355
I proceeded with creating a scene that I never load, but include in the player build, containing all classes that I expect to use in asset bundles, including an AnimatorController. This fixes my local problem, with the current asset bundle, but I'm still looking for a more robust solution.
I'm investigating "Strip Engine Code" as this more robust solution, but when I disable it for now I get a crash during startup, in UnityInitApplicationNoGraphics (I currently use 2018.2.2f1), but there seems to be a fix in more recent releases. I will update and check when I get the chance.

 

Found some official documentation explaining how stripping works. It's packaged under a different name, but in the end it's the root cause of the Class ID issue.
https://unity3d.com/learn/tutorials/topics/best-practices/il2cpp-mono

 

@MacroPinch Did you ever figure out how to resolve the missing YAML ID 91 at runtime?

 

@superpig Could not produce class with ID 329?

 

@superpig Could not produce class with ID 86?Thank you very much.

 

Best solution)_