For an Image Media Magic Field doing a "Set Image" using the "From URL" tab clicking the "Insert into Post" button does nothing. The image URL is valid since a green check mark is displayed before it. I have monitored the network traffic and no GET/POST request is sent from the browser. I have verified this error on both the WordPress version 2.1 and the GitHub version 2.0.1 (downloaded on Jan 9, 2013, isn't the version number wrong on the GitHub version?) However, the "Media Library" tab is working. Also should not the button label be "Insert into Field" instead of "Insert into Post"?