Cannot select existing image from the admin

[arthanson]

If you have an ImageFileNodeForeignKey and click the magnifying glass in the django-admin next to the field, the resulting media-tree popup page has the 'select' button disabled. There does not seem to be any way to select an existing image. If you click on an image you are taken to the edit page for that image, if you then save on that page, you are taken back to the main media-tree folder screen.

Inserting a new image works fine as you 'upload file' and then when you click save the image id is put into the field. But there doesn't seem to be any way of selecting an existing image and the select button never seems to get enabled, which is very confusing.