Here I found some bug in 053 First of all, here is my settings Unity 2018.3.0f2 AAS 0.5.3 Window7 Build with Platform: Standalone Bug 1. 0.5.3 Hosting Service did not update my file list automatically. I have to remove previous service, for just update the file list. This is different behavior with 0.4.8. Bug 2. 0.5.3 did not bring all my material data or something else, some of the prefab will missing material. This is different behavior with 0.4.8. I am sure I am using Standalone not Android. Bug 3. In 0.5.3(and 0.4.8), I draged a Folder into an AssetGroup, and add file into this folder. Addressables window did not update GUI info, I have to reopen Addressables window for update. Bug 4. First of all, I do really understand that this is not a bug, but it does cause trouble. AAS used to get cache data from path like this C:/Users/user/AppData/LocalLow/DefaultCompany/AASTest/com.unity.addressables/catalog_2018.12.25.02.05.35.hash'. But, it can't be found in the first time user launch App. And here comes with the problem With develop build, our user will get confused with the error message in built-in console window. Can you try to alert this info with other way? Uhh~ I don't wanna tell our QA, just ignore this message. In my experience, all error message have to be treated seriously, right?