WP Smush not Working on Dreamhost


I have WP Smush Plugin installed today on my website webbate.net I see that the Plguin is not correctly working with dreamhost but working with other cpanel hosting provider correctly. Has Dreamhost Blocked Wp SMush. The Wp Smush Plugin was not working before also when i had tried.

P.S The Yahoo Problem has been resolved then also it is not working.