Unity 5 "Unrecognized assets cannot be included in AssetBundles" issue

Hi,

So I am experimenting with AssetBundles in Unity 5 and I've encountered a problem I just can't figure out how to resolve.

I have a basic folder structure as shown in this image:

I've tagged the folder "Core" to be part of the AssetBundle "core".

I first tried with a small test where I only included a single sprite sheet and a few prefabs. Everything worked fine so I decided to add a bunch of extra assets. This time I added several smaller sprites (the Bricks/. folders) and gave them a sprite packing tag. I also included a few more prefabs using some of these new sprites.

When I now try and build I get the below error message

If I look at the bundles manifest file I can see all the assets are listed but they don't appear in the bundle when I try and load it. If I use GetAllAssetNames() or LoadAllAssets() I only get the assets that was included in the first test build. I don't get any of the new assets.

I thought it might had something to do with using the Sprite Packer so I removed the Packing tag but although it affected the bundles file size it didn't get rid of the error messages or fixed anything.

Can anyone possibly explain me what I might be doing wrong and what could cause the issue? I've been messing around with it for a couple of hours now and I'm running out of ideas.

 

I've got the same issue!

 

I've done some more experimenting and I did find a way to get the bundle built without the error messages. However I wouldn't call it an elegant solution but it might work for you.

Instead of just tagging the top folder I tried to tag all the files manually. Quite tedious depending on the number of assets you want to include, but this allowed me to build the bundle and use it with no issues at all.

 

Has this been resolved? I am noticing a simple class library dll with the same issue.

 

Also having this issue. Did someone file a bug report?

EDIT:
My issue is actually talked about over here:

http://forum.unity3d.com/threads/asset-bundle-manifest-null.323708/

It appears upgrading to 5.1 fixes the problem.

 

Sorry to reply so late. Normally, this message is caused by the Assets which are imported by default importer.

Is there any more information came with "Unrecognized assets cannot be included in AssetBundles" to indicate which Asset caused this problem? From Unity code side, we will output the path of the Asset.

And could you please also file a bug with repro project? I think it's a bug we should fix.

 

Is it possible to tag a folder from code? Because I'm creating the folder with an editor tool (that also creates the bundle) and whenever I create de assetbundle I get the warning on each folder contained in the assetbundle.

 

i got this error when i tried to add a folder that lies within the streamingassets folder. (the plan is to load assetbundles with included websites into a webview) is this possible?

Unrecognized assets cannot be included in AssetBundles: "Assets/StreamingAssets/setupvideo/media/skins/overlay/spritesheet.min.css".
UnityEditor.BuildPipeline:BuildAssetBundles(String)
CreateAssetBundles:BuildAllAssetBundles() (at Assets/AgentNapy/Scripts/AssetBundleStuff/CreateAssetBundles.cs:8)

 

I'm getting this error building an asset bundle with a DLL. Any updates?