This problem took a while to trouble shoot. After using WWise on other projects you generated the banks and include them in the project. Unity, you add them to a streamed assets folder and start using them with the WWise picker.

 

This error happens when you haven’t assigned any events to the UE4 bank object – or as it reads in UE4 – any bank to the UE4 Wwise Events.

 

 

When integrating WWise into Unreal 4 – there is a different workflow and few things needed to start working.

The biggest difference I found here was that a WWise generated bank – is not the same thing as a Unreal generated wwise bank.

The steps you can follow to generate in UE4 a successful UE4 WWise bank are:

  1. Create a WWise Project where ever you want.
  2. One you are ready to generate a bank – Generate the bank in WWise : The default folder under the WWise project folder structure (GeneratedBanks\[Platform]) is fine.
  3. Use AK Integration Tool through WWise Launcher to integrate WWise into your Unreal Project. Pick your WWise project (or create a new one and follow step 2)
  4. Under Edit/Project Settings –> WWise : Set the WWise project – though the Integration tool may have done this for you already. Set the Banks Folder which will live under the Unreal Project directory. ie UE4Project\content\WWiseAudio

5. Navigate to this folder in UE4 (you may need to create one in the UE4 browser.

6. Add a Audiokinetic bank UE4 object : this should be named the same as the bank name you generated in WWise. Keep in mind these are TWO SEPARATE THINGS and you will need to generate banks in WWise, and also Generate Banks in UE4.


I created an AK Bank Object: “WWiseVR”.
My WWise generated bank was named “WWiseVR.bnk”

7. From WWise Picker Drag the WWise Event(s) from the bank you assigned them to in WWIse to the Browser. You can also just drag the parent folder of the events if they are placed in a folder within wwise and it will replicate the folder/event structure in UE4.

8. Now Edit the Event – or select multiple events and use the right mouse click menu to EDIT to edit all of the selected events. Drag the WWise bank onto the Events that you want to assign to that bank.

8. Once you SAVE the Events. You can now right click on the UE4 WWise bank object and select Generate Selected Banks. You may need to click REFRESH before or/and after.