Upgraded Halion Sonic to Halion 4: Missing sound archive?

I just upgraded from Halion Sonic to Halion 4 (then performed the latest update for it) and I notice I am missing a lot of sounds under the Halion 4 Factory Content tab. I used the Search Path function on my entire computer and nothing came up for it. Do I have to pay extra for these sounds, or did my install go wrong somehow?