I'm trying to implement the Thumbnail picker from the News Module, but I'm having difficulties with the picker dialog box. All the links in the box, with the exception of the page 1|2 link, fail to work. They're trying to do a webform_dopostback, rather than a simple _dopostback. The page links do it correctly.
For example, in the News module, the cancel button uses this link:
whereas when I add it in the products module, the cancel button uses this link:
I've run in to this before when I was building a custom type editor, but in that case I had control of the popup dialog. What could be causing this?
Also, I can't figure out how to select images from the library rather than the filesystem, The News module example uses the filesystem:
What's the namespace for using the library?