Just starting out with WordPress, but I've run across a problem with the twenty eleven theme that I can't figure out how to solve. On the 'custom header' page in the dashboard, I can't save any changes I make. At first I thought this was just a problem with uploading, but the same applies to changing from random to a specific image, or turning off display text. If I click the "upload", "remove header image", or the "save changes" button, I am taken back to the "Manage Themes" page without any changes being saved.
If anyone has an idea of what could be causing this problem, I'd very much appreciate the advice.