Are you guys running any custom sound packs? Gun sights? Terrains?
I am at home, and had the auto-updater install the patch, and it works fine. But I only have the basic installation of Aces High, with no custom stuff added.
I keep seeing this debris.wav file being mentioned, and it was in my sounds folder after the patch. Is it missing for you? If you have a custom sound pack installed, is there a chance the folder or files got marked as read-only?