"Banks is not initialized properly" when packaging UE4 build

Thanks for letting us know about the warning, I don’t think it is related to the no sound issue but I will let the Dev team know and they will investigate further. As for the other part, although UFMODEvent variable exists, I think the underlying data it needs to play the event is missing in a packaged build. In any case, this is a known issue with the latest release and we’ve recently released a patch, can you please try downloading the patch from our website and reinstalling?