Why is Generate Sound Data in UE4 failing when I switched to event based packaging?

Question

I recently switched an unreal project over to event based packaging - the project is UE 4.26.2 and we're using Wwise 2021.1.1.7601.1995, using perforce for version control.

The migration seemed to go smoothly since we only had a test sound bank, which I deleted. Then, I imported a sound file into Wwise and created an event from it, which correctly reflected in the WAAPI picker in UE4.

After all this, I went to Build->Generate Sound Data, but it fails. I tried different combinations of Forcing Asset Synchronization, Clearing Sound data and generating, but no luck. 

I get this error

LogAkSoundData: Error: Windows: Media referenced by 'WATERFALL' in SoundBank 'SB_8E4490C98691481FA1E464953BF563D7' not found in any SoundBank

WATERFALL.wav is the test sound I imported. I am playing the event generated from it in a blueprint on BeginPlay and can hear the sound, but Generate Sound Data always fails.

If anyone can shed some light on this, I'd really appreciate it

Answer 1

You probably already did those steps but just in case:

• In project settings:
  • Make sure the Wwise project path is correct
  • Make sure the Wwise installation path is correct
• WAAPI Picker:
  • Try Generate Sound Data from it, it fiixed a similar issue for me
  • If the WAAPI Picker is not working, try profiling in Wwise, sometimes it fixes the connection
• Perforce
  • Try checking out the whole Wwise project
  • Try checking out the init soundbank and the Wwise Audio folder in the Unreal Content folder

If/when you figure it out, please post your steps!