I am trying to smush my images and it worked for the first 6,000 but now it is failing to find any images. When I double check in the browser the images exist.
This is the error:
Could not find /wp-content/uploads/2009/05/5-worst-presidential-candidates-who-lost1.jpg
Here's a link to that image: http://listverse.com/wp-content/uploads/2009/05/5-worst-presidential-candidates-who-lost1.jpg