I have a brand new install with all of the latest versions as of today. I installed Joomla, set up my template, installed and configured CB and everything was working but then I realized I still had the "index.php" in my URL so I renamed my htaccess.txt file and set $live_site, then set the URL rewrite and now I'm getting 404s. I tried recreating the menu items and clearing my cache to no avail. If I disable the rewrite URLs, everything works... any ideas?

Disregard... I had a loose nut on my keyboard.