Empty previous purchase history - iTunes 10.4

I'm in the USA. I'm running Windows Vista. I have iTunes 10.4. I brought up iTunes, and went to download previously purchased music. I clicked on "Purchased" in the quick links section. That brought up the following:

The history is totally blank. I can't even switch tabs from Music to Apps to Books. It appears completely broken. Logging out and back in, as well as closing iTunes, restarting the computer, and restarting iTunes did nothing to help. Does anybody know of a work around or a fix for this problem? (Yes the device I'm trying to get the music on is authorized.) Thanks.