If you are using a plug-in on your WordPress site to optimize images automatically when they are uploaded. WP Smush it had a series of updates, and the last one caused Smush to stop working altogether. Can’t blame the plugin entirely however since Yahoo’s smush service always had problems in the past. Anyway the EWW image optimizer has worked great since I have switched to it. I only had to bulk optimize images, which took about 45 minutes but saved me additional space and made my pages load even faster. Great job!