[Plugin: Custom Admin Branding] Header should not be shown in some cases.

The custom header is being shown in some places where it shouldn’t be. It will appear in the media upload lightbox and in the upgrade plugin content area when a plugin is attempting to be reactivated after an upgrade.

For the media upload lightbox, you can do a check for
('media-upload.php' == basename($_SERVER['PHP_SELF']))

A workaround for the lightbox until you get this check added to the plugin is adding the following to your functions.php of your theme:

// There's a bug in the Custom Admin Branding plugin
if ('media-upload.php' == basename($_SERVER['PHP_SELF'])) {
	remove_action('admin_head', 'custom_header', 11);
}

I’m not sure where the hook is for the plugin reactivation. You’re on your own there. ?? But the output looks something like this

Files downloaded
Attempting reactivation of plugin

[header shows up here]

Plugin reactivated successfully.