Add An Image Doesn’t Work

Hi! I don't know what I do wrong or what happend, but today I have this problem: When I want to put a new image I can't add image, the button don't work. When I add a featured image it's work, but If I want add to post don't work. ¬¬
I read this: http://www.ajaykumarsingh.com/wordpress/wordpress-3-2-multisite-add-an-image-doesnt-work.html
So I conclude that before I do all that I have to ask to experts... So... what happend?

I only have this problem with your themes... sorry :slight_frown:

I don't want uninstall all the plugins, I have all almost all installed!
Please, help me!