Hi all,

I've added an image to the Page class, but in the admin I can't select an image.
The dropdown combo in the admin won't expand, and I can't see any javascript errors. It's not styled properly either btw, see attached image.
The image is uploaded and it exists in the Files table. I've used a fresh, downloaded 3.0.3 install.
Here's the Page class:

class Page extends SiteTree {
	public static $db = array();

	public static $has_one = array(
	   'BackgroundImg' => 'Image',
	);
	
       function getCMSFields() {
          $fields = parent::getCMSFields();
          $fields->addFieldToTab("Root.Content.Main", new ImageField('BackgroundImg'));
          return $fields;
       }     
}

Am I doing something wrong?

Best regards,
Ronald van Raaphorst