I have several installations of WordPress on different domains I own. I recently attempted to add WordPress to a domain for my niece, and everything has been going wrong. I have tried re-installing several times, but I am having the same issue. I am getting red Xs on the quick post where the add image, video, media buttons should be. Even worse, when I attempt to create a new post, none of the editing panel images are showing up -- both in visual and html view. Even when I attempt to add an image to a post, the image doesn't show up. Insult to injuy: Even the header image that's cooked into Twenty Ten is not showing up. Again, this is the first time I've ever had this problem, and I cannot figure out how to remedy.
Here are some screenshosts
Dashboard
http://ow.ly/i/980A/original
Post editing panel
http://ow.ly/i/99vZ/original
Blog homepage
http://ow.ly/i/986s/original
Your help is greatly appreciated!