How can I downgrade my expansion? Weird, I know.
I upgraded to WOTLK and it downloaded fine, but then came up with an error that said there was info missing or something. So I thought it was so going crazy, and I tried to open it and it freaked out and closed and gave me an error message every time I tried to do this. I uninstalled it all and reinstalled but it won't let me play without WOTLK and installing that doesn't work.
So is there any way I can downgrade back to Burning Crusade? I have a macbook pro, by the way.

edit:

Forgot to add this. If I try to re-download it, and at the end of the first download, it told me it couldn't download because some patch didn't exist so it was ignoring it.
I'll try to redownload and screen shot.

You have extra patch-*.MPQ files in your Applications\World of Warcraft\Data folder that you need to take care of first before you can install the patch. There's no repair utility for the Mac so it's best if you just toss the whole World of Warcraft folder in the trash and install the game using the Wrath DVD/download.

We can't downgrade accounts.