Setting up built in assets for builds

I've been able to use the new addressable assets to load sprite images in my game in the editor, but the assets are not being included in builds. I believe there is some setup step I'm missing, but I couldn't find anything about built in assets in the documentation. Here's my setup:

I'm loading the sprite through the async call:

Code (CSharp):

1.  
2.         void Update()
3.         {
4.             if (_previousExpression != expressionPath)
5.             {
6.                 IAsyncOperation<Sprite> operation = Addressables.LoadAsset<Sprite>(_previousExpression);
7.                 operation.Completed += LoadAsset;
8.             }
9.         }
10.  
11.         private void LoadAsset(IAsyncOperation<Sprite> obj)
12.         {
13.             _expressionImage.sprite = obj.Result;
14.         }
15.  

I've got my assets added to the Default Local Group:


I've checked the Include in Build toggle for the asset settings:


Is there something else I need to setup? I'm targeting WebGL but I also tried Windows. I disabled IL2CPP engine stripping but still had the issue. This is the error I'm getting on WebGL:


loading expression UnityLoader.js:4:9380
UnityLoader.js:4:9380
(Filename: ./Runtime/Export/Debug.bindings.h Line: 45) UnityLoader.js:4:9380
UnityLoader.js:4:9380
NullReferenceException encountered in operation UnityEngine.ResourceManagement.AsyncOperations.ChainOperation`2[UnityEngine.Sprite,UnityEngine.AddressableAssets.ResourceLocators.IResourceLocator], result='', status='Failed', valid=True, location=Assets/art/expressions/dan/dan-okay.png.. UnityLoader.js:4:9380
UnityLoader.js:4:9380
(Filename: ./Runtime/Export/Debug.bindings.h Line: 45) UnityLoader.js:4:9380
UnityLoader.js:4:9380
NullReferenceException: Object reference not set to an instance of an object. UnityLoader.js:4:9380
UnityLoader.js:4:9380
UnityLoader.js:4:9380
(Filename: currently not available on il2cpp Line: -1)

My WebGL build does include a StreaminAssets directory with the assets named in the catalog. But the error indicates it can't find it. Is there some last step I'm missing?

 

Finally figured out what my issue was when I compared my setup to the example project here: https://github.com/Unity-Technologies/Addressables-Sample

My issue was that the LocalBuildPath in my AddressableAssetSettings was incorrect. It needed to be changed to 'Assets/StreamingASsets/aa/[BuildTarget]' I'm not sure how it was changed but that solved the issue.

I was able to test this in editor by setting my Play Mode Script in the addressables window to Packed Play Mode so it provided the same results in editor as it does in the build.

 

You shouldn't used a hardcoded StreamingAssets path at all. Your build path should be `[UnityEngine.AddressableAssets.Addressables.BuildPath]/[BuildTarget]` for local assets. This was mentioned in the changelog, but is understandably missed with all the chaos. In the upcoming release, we've added code to check for this common situation and alert the user.