Hi,
Thank you for sharing the information and version number.
This error is often caused by a version mismatch between FMOD Studio and the Unity FMOD integration. Could you please check the version of your FMOD Unity plugin? You can find this information by navigating to FMOD > About Integration in the Unity menu.
Additionally, there’s a similar discussion that might help you resolve the issue: Master.strings.bank is not a valid bank - #5 by jeff_fmod
Hope this helps! Let me know if the issue persists.