Problem abount using AAS 0.4.6

Hey, I got this error while I am using AAS 0.4.6
And I have no way back, but delete all setting files

AAS 0.4.6
Reproduce step:
1. Create AAS environment
2. Add two group, add several resources into these groups
3. Close Unity and Restart Unity
4. Now, you can't add or delete group anymore
The only way back is delete all setting files

Here is the error callstack:

NullReferenceException: Object reference not set to an instance of an object
UnityEditor.AddressableAssets.BundledAssetGroupSchema.get_HostingServicesContentRoot () (at C:/Users/user/AppData/Local/Unity/cache/packages/packages.unity.com/com.unity.addressables@0.4.6-preview/Editor/Settings/GroupSchemas/BundledAssetGroupSchema.cs:118)
UnityEditor.AddressableAssets.HostingServicesManager.GetAllContentRoots () (at C:/Users/user/AppData/Local/Unity/cache/packages/packages.unity.com/com.unity.addressables@0.4.6-preview/Editor/HostingServices/HostingServicesManager.cs:393)
UnityEditor.AddressableAssets.HostingServicesManager.ConfigureAllHostingServices () (at C:/Users/user/AppData/Local/Unity/cache/packages/packages.unity.com/com.unity.addressables@0.4.6-preview/Editor/HostingServices/HostingServicesManager.cs:372)
UnityEditor.AddressableAssets.HostingServicesManager.OnSettingsModification (UnityEditor.AddressableAssets.AddressableAssetSettings s, ModificationEvent evt, System.Object obj) (at C:/Users/user/AppData/Local/Unity/cache/packages/packages.unity.com/com.unity.addressables@0.4.6-preview/Editor/HostingServices/HostingServicesManager.cs:365)
UnityEditor.AddressableAssets.AddressableAssetSettings.SetDirty (ModificationEvent modificationEvent, System.Object eventData, Boolean postEvent) (at C:/Users/user/AppData/Local/Unity/cache/packages/packages.unity.com/com.unity.addressables@0.4.6-preview/Editor/Settings/AddressableAssetSettings.cs:865)
UnityEditor.AddressableAssets.AddressableAssetGroup.SetDirty (ModificationEvent modificationEvent, System.Object eventData, Boolean postEvent) (at C:/Users/user/AppData/Local/Unity/cache/packages/packages.unity.com/com.unity.addressables@0.4.6-preview/Editor/Settings/AddressableAssetGroup.cs:443)
UnityEditor.AddressableAssets.AddressableAssetGroup.AddSchema (System.Type type, Boolean postEvent) (at C:/Users/user/AppData/Local/Unity/cache/packages/packages.unity.com/com.unity.addressables@0.4.6-preview/Editor/Settings/AddressableAssetGroup.cs:134)
UnityEditor.AddressableAssets.AddressableAssetSettings.CreateGroup (System.String groupName, Boolean setAsDefaultGroup, Boolean readOnly, Boolean postEvent, System.Type[] types) (at C:/Users/user/AppData/Local/Unity/cache/packages/packages.unity.com/com.unity.addressables@0.4.6-preview/Editor/Settings/AddressableAssetSettings.cs:1054)
UnityEditor.AddressableAssets.AddressableAssetEntryTreeView.CreateNewGroup (System.Object context) (at C:/Users/user/AppData/Local/Unity/cache/packages/packages.unity.com/com.unity.addressables@0.4.6-preview/Editor/GUI/AddressableAssetsSettingsGroupTreeView.cs:807)
UnityEditor.GenericMenu.CatchMenu (System.Object userData, System.String[] options, Int32 selected) (at C:/buildslave/unity/build/Editor/Mono/GUI/GenericMenu.cs:119)

 

Here is the bug reproduce project

using Unity 2018.2.13f1

 

I guess I found the reason why AAS keeps throw this error message

The reason is BundledAssetGroupSchema's .asset file did not SetDirty in somewhere
So it will lose ProfileValueReference instance after restart Unity

I can fix this problem by myself, in two ways
but I wish, AAS team could provide fixed version later...

1. Lazy way:
Execute this API after AAS data updated
AssetDatabase.ForceReserializeAssets();

2. The same way like solution 1, but manually load all AAS .asset files
makes them dirty ensure they could be saved correctly after AAS data updated.

 

Same problem here.
AAS 0.4.8

 

Where I can get 0.4.8?

 

The script attached to the thread doesn't work for me. I still receive this error, 3 times, every time I save my scene.

I wonder if this is because I updated my Unity version, and in the process all my metas were reimported?

 

Thanks for letting us know, I've filed a bug in our system.

as to the "where can I get 0.4.8", it's out now, but as of when you asked the question it was not. Some users have discovered how to get our test builds of addressables before they are released. Doing this is a terrible idea. As you can see by the fact that our first released 0.4.x was 0.4.6, we had 6 builds of addressables that didn't work. We create a build for internal testing, test, fix, repeat. Once it's stable enough, we release it. So attempting to access the test builds is a recipe for running into weird bugs, and potentially nuking your data. I would not recommend it.

-Bill

 

I'm encountering the same issue here.

 

@unity_bill Is this bug in the issue tracker? Or in an internal list?

To the others experiencing the bug: is the only solution right now to delete and start over, and saving each time using ittheforeim's script?

 

@CapnCromulent I can confirm that deleting AddressableAssetData and using @itthereforeim's script before closing the editor avoids the bug.

I previously got the error when trying to create a new group or trying to fix duplicate references with the analyze tool.

edit: And thank you @itthereforeim for the work around it saved me a lot of time.