THis is the post that worked for me. I used steps two and three. I dont understand step 1


1. Verify the game cache (I had one file corrupted after patching).
2. Turn down the graphics settings to default. When I did this, the problem went away, as long as I kept the graphics settings down. When I turned them back up, the problems started again.
3. Edit config.ini (in My Documents/My Games/Civilization V). Change EnableGameCoreThreading = 1 to EnableGameCoreThreading = 0. The game should now work. (I found this step here.)

Hopefully they will release another update soon to fix the problems with this patch, in the mean time, this got my game working again.