I can't change my twitter header?

[Ryan]

Usually when buttons do not work on webpages it either means there is a programming error on the webpage, or the browser you are using has an issue with it.

Have you tried another browser such as Firefox, Chrome, Safari, Opera?

I am a fan of Firefox. I am on my Mac right now using it to write this. Even though Mac's Safari browser is nice, it has problems in the newest version of Mac right now.

You can get Firefox from: http://www.firefox.com
Safari: http://www.apple.com/safari/
Chrome: https://www.google.com/intl/en/chrome/browser/
Opera: http://www.opera.com/

I am not getting into the differences with each browser, but if you are using Internet Explorer, just try a different one to see if the problem fixes itself. If not, there may be a problem with your java.

A lot of buttons and controls on webpages are written in java/javascript. If your java has an issue, then you can update your java here: http://www.java.com