Something went wrong while Post Processing the assembly (after updating Collections + Entities)

I'm using Unity 2019.3.0f3

After upgrading
Unity.Collections from preview.0 - 0.3.0 to preview.6 - 0.4.0 and
Unity.Entities from preview.4 - 0.3.0 to preview.10 - 0.4.0

I get the following error message. Any ideas ? I already saw that similar errors have been posted, so I guess it's a bug ?

Something went wrong while Post Processing the assembly (Assembly-CSharp.dll) :
Failed to resolve System.Collections.Generic.Queue`1
at Unity.Entities.CodeGen.TypeReferenceExtensions.CheckedResolve (Mono.Cecil.TypeReference typeReference) [0x00001] in E:\MyGame\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\CecilExtensionMethods.cs:13
at Unity.Entities.CodeGen.BlobAssetSafetyVerifier.<VerifyMethod>g__IsTypeRestrictedToBlobAssetStorage|3_0 (Mono.Cecil.TypeReference tr, Unity.Entities.CodeGen.BlobAssetSafetyVerifier+<>c__DisplayClass3_0& ) [0x000f0] in E:\MyGame\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\BlobAssetSafety\BlobAssetSafetyVerifier.cs:64
at Unity.Entities.CodeGen.BlobAssetSafetyVerifier.VerifyMethod (Mono.Cecil.MethodDefinition method, System.Collections.Generic.HashSet`1[T] _nonRestrictedTypes) [0x00058] in E:\MyGame\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\BlobAssetSafety\BlobAssetSafetyVerifier.cs:90
at Unity.Entities.CodeGen.BlobAssetSafetyVerifier.AssertNoBlobAssetLeavesBlobAssetStorage () [0x00063] in E:\MyGame\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\BlobAssetSafety\BlobAssetSafetyVerifier.cs:37
at Unity.Entities.CodeGen.BlobAssetSafetyVerifier.PostProcessImpl () [0x0000a] in E:\MyGame\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\BlobAssetSafety\BlobAssetSafetyVerifier.cs:20
at Unity.Entities.CodeGen.EntitiesILPostProcessor.PostProcess (Mono.Cecil.AssemblyDefinition assemblyDefinition, System.Boolean& madeAChange) [0x00009] in E:\MyGame\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\EntitiesILPostProcessor.cs:231
at Unity.Entities.CodeGen.EntitiesILPostProcessors.Process (Unity.CompilationPipeline.Common.ILPostProcessing.ICompiledAssembly compiledAssembly) [0x0004b] in E:\MyGame\Library\PackageCache\com.unity.entities@0.4.0-preview.10\Unity.Entities.CodeGen\EntitiesILPostProcessor.cs:44
at UnityEditor.Scripting.ScriptCompilation.ILPostProcessing.RunILPostProcessors (UnityEditor.Scripting.ScriptCompilation.ScriptAssembly assembly, System.String outputTempPath) [0x0011b] in <83a73882c51c4602b3d34743827d03e7>:0
at UnityEditor.Scripting.ScriptCompilation.ILPostProcessing.PostProcess (UnityEditor.Scripting.ScriptCompilation.ScriptAssembly assembly, System.Collections.Generic.List`1[T] messages, System.String outputTempPath) [0x00061] in <83a73882c51c4602b3d34743827d03e7>:0

 

Worth checking you're on .net standard 2.0 and any plugin dlls are also that version.

 

I am struggling with the same problem. No solution found yet

 

Yup I am on Net standard 2.0. No plugins.

 

Any update to this? Just encountered this.