Repro is inconsistent in new Setup projects, but can't seem to fix this issue in a larger project.
Graph information provided in the attached .zip file. [^2020-06-26-16-15-08.zip]

Repro:
1. Create canvas with button and audiosource with an audioclip set.
2. Create graph that plays audiosource clip on button click.
3. Try to build.

Expected result: builds successfully.
Actual result: build fails, 'audioclip does not support code generation' error. Detailed at end of report.  Can be seen in PickupHandler_Preview.cs and PickupHandler_Real.cs files. [^2020-06-26-16-15-08.zip]

Reproducible on branch release/2.0.0a12 using Unity 2020.2.0a15 and Unity 2019.4.1f1
Issues in: 2.0.0a10 - build succeeds but the button doesn't play sound in build. Compilation error appears a few seconds after build runs, detailed in notes.
Did not reproducible in: 2.0.0a8, 2.0.0a9

Notes:
- No issues playing sound in playmode.
- Set lower user prevalence as I can't get a 100% consistent repro.
- If the build instead succeeds, first build seems to fail to play the sound on button click. Second build is usually fine.
- Replaced package files in bigger project multiple times, project continues to work but build does not.
- 2.0.0a10 compilation error:
{noformat}
Assets\Ludiq.Generated\Transient\Scripts\TestClass.cs(45,90): error CS1503: Argument 2: cannot convert from 'Ludiq.Bolt.Generated.TestClass' to 'Ludiq.Bolt.IGeneratedStateTransition'
{noformat}

Error messages on build:
{noformat}
Unhandled exception during generation:
System.NotSupportedException: AudioClip does not support code generation.
at Unity.Bolt.SingleDecoratorProvider`3[TDecorated,TDecorator,TAttribute].GetDecoratorType (System.Type decoratedType) [0x00036] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Decorators\SingleDecoratorProvider.cs:110
at Unity.Bolt.SingleDecoratorProvider`3[TDecorated,TDecorator,TAttribute].CreateDecorator (TDecorated decorated) [0x00029] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Decorators\SingleDecoratorProvider.cs:44
at Unity.Bolt.SingleDecoratorProvider`3[TDecorated,TDecorator,TAttribute].GetDecorator (TDecorated decorated) [0x000a7] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Decorators\SingleDecoratorProvider.cs:293
at Unity.Bolt.SingleDecoratorProvider`3[TDecorated,TDecorator,TAttribute].GetDecorator[T] (TDecorated decorated) [0x00001] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Decorators\SingleDecoratorProvider.cs:307
at Unity.Bolt.XGeneratorProvider.Generator[TGenerator] (System.Object o, Unity.Bolt.IGeneration generation) [0x00001] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\GeneratorProvider.cs:24
at Unity.Bolt.BoltGenerationUtility.GenerateLiteral (System.Object o, Unity.Bolt.IGeneration generation) [0x00013] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\BoltGenerationUtility.cs:43
at Unity.Bolt.FlowGraphVariableGenerator.GenerateField (Unity.Bolt.FieldGeneration field) [0x00009] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Flow\Editor\Generation\FlowGraphVariableGenerator.cs:57
at Unity.Bolt.CompositeGeneration`1+<>c__DisplayClass8_0`2[TDeclaration,TGeneration,TCode].<BoundGenerator>b__0 (TGeneration generation) [0x00000] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\CompositeGeneration.cs:37
at Unity.Bolt.FieldGeneration.GenerateDeclaration () [0x00001] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\FieldGeneration.cs:18
at Unity.Bolt.MemberGeneration`1[TDeclaration].Unity.Bolt.IMemberGeneration.GenerateDeclaration () [0x00000] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\MemberGeneration.cs:32
at Unity.Bolt.CompositeGeneration`1+<>c[TDeclaration].<GenerateMembers>b__26_0 (Unity.Bolt.IMemberGeneration m) [0x00000] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\CompositeGeneration.cs:162
at System.Linq.Enumerable+SelectIListIterator`2[TSource,TResult].MoveNext () [0x00048] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at System.Collections.Generic.List`1[T].InsertRange (System.Int32 index, System.Collections.Generic.IEnumerable`1[T] collection) [0x000db] in <fb001e01371b4adca20013e0ac763896>:0
at System.Collections.Generic.List`1[T].AddRange (System.Collections.Generic.IEnumerable`1[T] collection) [0x00000] in <fb001e01371b4adca20013e0ac763896>:0
at Unity.Bolt.BoltClassGenerator.GenerateDeclaration (Unity.Bolt.ClassGeneration classGeneration) [0x00041] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generators\BoltClassGenerator.cs:102
at Unity.Bolt.ClassGeneration.GenerateDeclaration () [0x00001] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\ClassGeneration.cs:25
at Unity.Bolt.TypeGeneration`1[TDeclaration].Unity.Bolt.ITypeGeneration.GenerateDeclaration () [0x00000] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\TypeGeneration.cs:11
at Unity.Bolt.DocumentGenerator.Generate (Unity.Bolt.DocumentGeneration generation) [0x00241] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generators\DocumentGenerator.cs:61
at Unity.Bolt.DocumentGeneration.Generate () [0x00001] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\DocumentGeneration.cs:33
at Unity.Bolt.RootGeneration.Generate () [0x00022] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\RootGeneration.cs:106
at Unity.Bolt.GenerationWorkflow+<>c__DisplayClass2_0.<Generate>b__1 (Unity.Bolt.Task generationTask) [0x0007f] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\GenerationWorkflow.cs:75
UnityEngine.Debug:LogError(Object)
Unity.Bolt.<>c__DisplayClass2_0:<Generate>b__1(Task) (at Assets/Package/Bolt.Core/Editor/Generation/GenerationWorkflow.cs:79)
Unity.Bolt.Task:Run() (at Assets/Package/Bolt.Core/Editor/Tasks/Task.cs:66)
Unity.Bolt.ForegroundTaskRunner:Run(Task) (at Assets/Package/Bolt.Core/Editor/Tasks/Runners/ForegroundTaskRunner.cs:25)
Unity.Bolt.Task:Run(String, Int32, Action`1) (at Assets/Package/Bolt.Core/Editor/Tasks/Task.cs:206)
Unity.Bolt.GenerationWorkflow:Generate(Boolean) (at Assets/Package/Bolt.Core/Editor/Generation/GenerationWorkflow.cs:47)
Unity.Bolt.GenerationBuildProcessor:OnPreprocessBuild(BuildReport) (at Assets/Package/Bolt.Core/Editor/Generation/GenerationBuildProcessor.cs:18)
UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()
{noformat}
{noformat}
Error building Player: Unhandled exception during generation:
System.NotSupportedException: AudioClip does not support code generation.
at Unity.Bolt.SingleDecoratorProvider`3[TDecorated,TDecorator,TAttribute].GetDecoratorType (System.Type decoratedType) [0x00036] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Decorators\SingleDecoratorProvider.cs:110
at Unity.Bolt.SingleDecoratorProvider`3[TDecorated,TDecorator,TAttribute].CreateDecorator (TDecorated decorated) [0x00029] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Decorators\SingleDecoratorProvider.cs:44
at Unity.Bolt.SingleDecoratorProvider`3[TDecorated,TDecorator,TAttribute].GetDecorator (TDecorated decorated) [0x000a7] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Decorators\SingleDecoratorProvider.cs:293
at Unity.Bolt.SingleDecoratorProvider`3[TDecorated,TDecorator,TAttribute].GetDecorator[T] (TDecorated decorated) [0x00001] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Decorators\SingleDecoratorProvider.cs:307
at Unity.Bolt.XGeneratorProvider.Generator[TGenerator] (System.Object o, Unity.Bolt.IGeneration generation) [0x00001] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\GeneratorProvider.cs:24
at Unity.Bolt.BoltGenerationUtility.GenerateLiteral (System.Object o, Unity.Bolt.IGeneration generation) [0x00013] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\BoltGenerationUtility.cs:43
at Unity.Bolt.FlowGraphVariableGenerator.GenerateField (Unity.Bolt.FieldGeneration field) [0x00009] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Flow\Editor\Generation\FlowGraphVariableGenerator.cs:57
at Unity.Bolt.CompositeGeneration`1+<>c__DisplayClass8_0`2[TDeclaration,TGeneration,TCode].<BoundGenerator>b__0 (TGeneration generation) [0x00000] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\CompositeGeneration.cs:37
at Unity.Bolt.FieldGeneration.GenerateDeclaration () [0x00001] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\FieldGeneration.cs:18
at Unity.Bolt.MemberGeneration`1[TDeclaration].Unity.Bolt.IMemberGeneration.GenerateDeclaration () [0x00000] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\MemberGeneration.cs:32
at Unity.Bolt.CompositeGeneration`1+<>c[TDeclaration].<GenerateMembers>b__26_0 (Unity.Bolt.IMemberGeneration m) [0x00000] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\CompositeGeneration.cs:162
at System.Linq.Enumerable+SelectIListIterator`2[TSource,TResult].MoveNext () [0x00048] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at System.Collections.Generic.List`1[T].InsertRange (System.Int32 index, System.Collections.Generic.IEnumerable`1[T] collection) [0x000db] in <fb001e01371b4adca20013e0ac763896>:0
at System.Collections.Generic.List`1[T].AddRange (System.Collections.Generic.IEnumerable`1[T] collection) [0x00000] in <fb001e01371b4adca20013e0ac763896>:0
at Unity.Bolt.BoltClassGenerator.GenerateDeclaration (Unity.Bolt.ClassGeneration classGeneration) [0x00041] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generators\BoltClassGenerator.cs:102
at Unity.Bolt.ClassGeneration.GenerateDeclaration () [0x00001] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\ClassGeneration.cs:25
at Unity.Bolt.TypeGeneration`1[TDeclaration].Unity.Bolt.ITypeGeneration.GenerateDeclaration () [0x00000] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\TypeGeneration.cs:11
at Unity.Bolt.DocumentGenerator.Generate (Unity.Bolt.DocumentGeneration generation) [0x00241] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generators\DocumentGenerator.cs:61
at Unity.Bolt.DocumentGeneration.Generate () [0x00001] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\DocumentGeneration.cs:33
at Unity.Bolt.RootGeneration.Generate () [0x00022] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\Generations\RootGeneration.cs:106
at Unity.Bolt.GenerationWorkflow+<>c__DisplayClass2_0.<Generate>b__1 (Unity.Bolt.Task generationTask) [0x0007f] in D:\UnityWork\Bolt\CleanAudioProject\Bolt2.Debug.Unity2019\Assets\Package\Bolt.Core\Editor\Generation\GenerationWorkflow.cs:75
{noformat}