[Bug] Soundbanks being cooked in REDKit reported to be "empty"

When I try to go to publish > Cook Mod Sounds > choosing soundbank(s), it says the soundbanks are empty. THis is a bug that consisted since around Christmas 2024 and made it impossible to create new or update existing music mods.

Here is a screenshot:


Reproduce the issue through Publish > Cook Mod Sounds with one or more soundbanks selected, using the reported screenshot as context. Trace the soundbank cooking entry point and determine why the selected banks are reported as empty. Done means existing soundbanks can be cooked successfully for creating or updating music mods.

Written by the indexing model from the issue text.