# FMOD Unity Android Build: Some events not playing, failed to open master.bank **URL:** \ **Category:** Unity\ **Tags:** unity\ **Created:** [August 15, 2021, 8:23pm UTC](https://qa.fmod.com/t/fmod-unity-android-build-some-events-not-playing-failed-to-open-master-bank/17568 "2021-08-15T20:23:25Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![zaqwertu](https://avatars.discourse-cdn.com/v4/letter/z/b38774/32.png) [@zaqwertu](https://qa.fmod.com/u/zaqwertu)\ **Post date:** [August 15, 2021, 8:23pm UTC](https://qa.fmod.com/t/fmod-unity-android-build-some-events-not-playing-failed-to-open-master-bank/17568/1 "2021-08-15T20:23:26Z")
Hello, We are currently using FMOD Studio and Unity integration version 2.01.11 We are having android-build specific errors where sounds are silent when triggered. These errors do not occur in the windows build of the game. This issue is not occuring in every scene, none of the messages below are printed into the console when all sounds are playing correctly. Here are some of the messages being printed into the android log of a development build, would appreciate any guidance on how to fix this. Best, Zach ```auto 08-15 13:06:38.920 1148 1379 W Unity : [FMOD] EventModelAPIData::getSampleLoadingState : Event '{878e9518-a1db-4159-b3cc-5ae1d47f889d}' waveform in error state 08-15 13:06:38.920 1148 1379 W Unity : 08-15 13:06:38.920 1148 1379 W Unity : UnityEngine.Logger:Log(LogType, Object) 08-15 13:06:38.920 1148 1379 W Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-15 13:06:38.920 1148 1379 W Unity : 08-15 13:06:38.920 1148 1379 W Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-15 13:06:38.920 1148 1379 W Unity : 08-15 13:06:38.920 1148 1379 W Unity : [FMOD] SoundSourceInstrumentInstance::startChannelIfReady : Waveform instance in error state 76 08-15 13:06:38.920 1148 1379 W Unity : 08-15 13:06:38.920 1148 1379 W Unity : UnityEngine.Logger:Log(LogType, Object) 08-15 13:06:38.920 1148 1379 W Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-15 13:06:38.920 1148 1379 W Unity : 08-15 13:06:38.920 1148 1379 W Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-15 13:06:38.920 1148 1379 W Unity : 08-15 13:06:39.028 1148 1379 W Unity : [FMOD] EventModelAPIData::getSampleLoadingState : Event '{7ac40857-e3b1-4c1f-94a4-92f82ea079fe}' waveform in error state 08-15 13:06:39.028 1148 1379 W Unity : 08-15 13:06:39.028 1148 1379 W Unity : UnityEngine.Logger:Log(LogType, Object) 08-15 13:06:39.028 1148 1379 W Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-15 13:06:39.028 1148 1379 W Unity : 08-15 13:06:39.028 1148 1379 W Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-15 13:06:39.028 1148 1379 W Unity : 08-15 13:06:39.028 1148 1379 W Unity : [FMOD] SoundSourceInstrumentInstance::startChannelIfReady : Waveform instance in error state 76 08-15 13:06:39.028 1148 1379 W Unity : 08-15 13:06:39.028 1148 1379 W Unity : UnityEngine.Logger:Log(LogType, Object) 08-15 13:06:39.028 1148 1379 W Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-15 13:06:39.028 1148 1379 W Unity : 08-15 13:06:39.028 1148 1379 W Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-15 13:06:39.028 1148 1379 W Unity : 08-15 13:06:39.029 1148 1380 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-15 13:06:39.029 1148 1380 E Unity : 08-15 13:06:39.029 1148 1380 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-15 13:06:39.029 1148 1380 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-15 13:06:39.029 1148 1380 E Unity : 08-15 13:06:39.029 1148 1380 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-15 13:06:39.029 1148 1380 E Unity : 08-15 13:06:39.029 1148 1380 E Unity : [FMOD] RuntimeBankModel::openFile : Failed to open file 'file:///android_asset/Master.bank' 08-15 13:06:39.029 1148 1380 E Unity : 08-15 13:06:39.029 1148 1380 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-15 13:06:39.029 1148 1380 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-15 13:06:39.029 1148 1380 E Unity : 08-15 13:06:39.029 1148 1380 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-15 13:06:39.029 1148 1380 E Unity : 08-15 13:06:39.030 1148 1380 E Unity : [FMOD] ResourceLoader::asyncLoadResourceThread : Failed to load waveform {68d35927-1dc7-45ba-b292-74b4925f8ae5} (error 18) ``` ---
**Author:** ![jeff\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/jeff_fmod/32/1766_2.png) [@jeff\_fmod](https://qa.fmod.com/u/jeff_fmod)\ **Post date:** [August 19, 2021, 12:53am UTC](https://qa.fmod.com/t/fmod-unity-android-build-some-events-not-playing-failed-to-open-master-bank/17568/2 "2021-08-19T00:53:30Z")
Are you using split binaries with a separate apk and obb file? The 76 error indicates that the resource isn’t loaded, and the 18 error indicates the file wasn’t found. Perhaps you could try loading the scene and banks asynchronously- we have an [example in the scripting docs.](https://fmod.com/resources/documentation-unity?version=2.01&page=examples-async-loading.html) ---
**Author:** ![zaqwertu](https://avatars.discourse-cdn.com/v4/letter/z/b38774/32.png) [@zaqwertu](https://qa.fmod.com/u/zaqwertu)\ **Post date:** [August 22, 2021, 12:38am UTC](https://qa.fmod.com/t/fmod-unity-android-build-some-events-not-playing-failed-to-open-master-bank/17568/3 "2021-08-22T00:38:34Z")
Hey Jeff! Thanks for the response. I tried loading the banks asynchronously via the coding example, it works for loading the banks but it did not solve my issue. I’ve added the console messages again, I’m wondering why it’s logging `"Could not open 'Master.bank' from the asset manager."` I checked the banks with a call to `FMODUnity.RuntimeManager.HasBankLoaded(bankName);` and they all return true. ```auto 08-21 17:35:33.055 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.055 13850 14216 E Unity : 08-21 17:35:33.055 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.055 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.055 13850 14216 E Unity : 08-21 17:35:33.055 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.055 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.056 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.056 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.056 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.056 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.056 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.056 13850 14216 E Unity : 08-21 17:35:33.057 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.057 13850 14216 E Unity : 08-21 17:35:33.057 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.057 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.057 13850 14216 E Unity : 08-21 17:35:33.057 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.057 13850 14216 E Unity : 08-21 17:35:33.057 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.057 13850 14216 E Unity : 08-21 17:35:33.057 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.057 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.057 13850 14216 E Unity : 08-21 17:35:33.057 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.057 13850 14216 E Unity : 08-21 17:35:33.057 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.057 13850 14216 E Unity : 08-21 17:35:33.057 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.057 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.057 13850 14216 E Unity : 08-21 17:35:33.057 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.057 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.058 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.058 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.058 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : UnityEngine.Logger:Log(LogType, Object) 08-21 17:35:33.058 13850 14216 E Unity : FMODUnity.RuntimeManager:DEBUG_CALLBACK(DEBUG_FLAGS, IntPtr, Int32, IntPtr, IntPtr) 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.058 13850 14216 E Unity : (Filename: ./Runtime/Export/Debug/Debug.bindings.h Line: 39) 08-21 17:35:33.058 13850 14216 E Unity : 08-21 17:35:33.059 13850 14216 E Unity : [FMOD] AndroidAssetFile::reallyOpen : Could not open 'Master.bank' from the asset manager. ``` ---
**Author:** ![jeff\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/jeff_fmod/32/1766_2.png) [@jeff\_fmod](https://qa.fmod.com/u/jeff_fmod)\ **Post date:** [August 23, 2021, 4:34am UTC](https://qa.fmod.com/t/fmod-unity-android-build-some-events-not-playing-failed-to-open-master-bank/17568/4 "2021-08-23T04:34:21Z")
I might need a little more context on your setup to figure out what’s going on here. Can you please let me know: - Are you using split binaries in Unity’s Android Player Settings? - Are you using Streaming Assets or Asset Bundles in the FMOD Integration Settings? - In the Build preferences of FMOD Studio, do you have “Build metadata and assets to a single bank” selected or one of the other options? ---
**Author:** ![zaqwertu](https://avatars.discourse-cdn.com/v4/letter/z/b38774/32.png) [@zaqwertu](https://qa.fmod.com/u/zaqwertu)\ **Post date:** [August 24, 2021, 12:50am UTC](https://qa.fmod.com/t/fmod-unity-android-build-some-events-not-playing-failed-to-open-master-bank/17568/5 "2021-08-24T00:50:19Z")
Thanks for the follow up, - We weren’t using split binaries, switching to split binaries in the android player settings appears to have fixed the issue. I can mark this as a solution if I don’t find any issues after some more testing. - We are using streaming assets in the FMOD settings - In FMOD the current selection is “Build metadata and assets to a single bank” ---
**Author:** ![jeff\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/jeff_fmod/32/1766_2.png) [@jeff\_fmod](https://qa.fmod.com/u/jeff_fmod)\ **Post date:** [August 25, 2021, 12:52am UTC](https://qa.fmod.com/t/fmod-unity-android-build-some-events-not-playing-failed-to-open-master-bank/17568/6 "2021-08-25T00:52:06Z")
Glad to hear that’s working. Thanks for confirming your solution!