My Audacity-having problems

I just downloaded the newest version of Audacity, and I’m having a bit of a problem. The Mixer Toolbar is not working properly. The box that should have Mic/Line in/etc… is just a blank box. I checked the Help button, and it just advised to what it was for. Is there anything that needs doing before the proper field pops up?
Thanks for your help,
greatshakes.