bbloye

Been fixed in 1.9.1! Hooray!

Well done, difreo. Added the 0 to my init function and I can now add images with the Media Picker.

For reference, my code is as follows (register_post_type arguments omitted for clarity):

add_action('init', 'banner_register', 0);

function banner_register() {
  register_post_type(…);
}

Just to add my voice, I’m having the same problem, too.

The problem only seems to affect post types added manually using register_post_type in functions.php, though. I didn’t have the same problem with post types added using the ‘Custom Post Type UI’ plugin on another site, so perhaps it’s worth trying this (or another) plugin if you are having problems.

This makes me wonder if there is some property that is being set by the plugin that needs to be set in the register_post_type function for the Media Picker to work.