Change Details

The -clobber option was added in a more recent version of optipng. optipng 0.6.4 is available in Ubuntu 12.04 and CentOS 6.4 and there isn't any check for what version is installed on the system. //Writing CSS 'webroot/rsrc/css/sprite-apps.css'... Writing sprite 'webroot/rsrc/image/sprite-apps.png'... Optimizing... Error: Unrecognized option: -clobber Writing sprite 'webroot/rsrc/image/sprite-apps-X2.png'... Optimizing... Error: Unrecognized option: -clobber Writing CSS 'webroot/rsrc/css/sprite-apps-large.css'... Writing sprite 'webroot/rsrc/image/sprite-apps-large.png'... Optimizing... Error: Unrecognized option: -clobber Writing sprite 'webroot/rsrc/image/sprite-apps-large-X2.png'... Optimizing... Error: Unrecognized option: -clobber Done.//

The -clobber option was removed in a more recent version of optipng. optipng 0.6.4 is available in Ubuntu 12.04 and CentOS 6.4 and there isn't any check for what version is installed on the system. See comment-2 for corrections. //Writing CSS 'webroot/rsrc/css/sprite-apps.css'... Writing sprite 'webroot/rsrc/image/sprite-apps.png'... Optimizing... Error: Unrecognized option: -clobber Writing sprite 'webroot/rsrc/image/sprite-apps-X2.png'... Optimizing... Error: Unrecognized option: -clobber Writing CSS 'webroot/rsrc/css/sprite-apps-large.css'... Writing sprite 'webroot/rsrc/image/sprite-apps-large.png'... Optimizing... Error: Unrecognized option: -clobber Writing sprite 'webroot/rsrc/image/sprite-apps-large-X2.png'... Optimizing... Error: Unrecognized option: -clobber Done.//

The -clobber option was addedremoved in a more recent version of optipng. optipng 0.6.4 is available in Ubuntu 12.04 and CentOS 6.4 and there isn't any check for what version is installed on the system. See comment-2 for corrections. //Writing CSS 'webroot/rsrc/css/sprite-apps.css'... Writing sprite 'webroot/rsrc/image/sprite-apps.png'... Optimizing... Error: Unrecognized option: -clobber Writing sprite 'webroot/rsrc/image/sprite-apps-X2.png'... Optimizing... Error: Unrecognized option: -clobber Writing CSS 'webroot/rsrc/css/sprite-apps-large.css'... Writing sprite 'webroot/rsrc/image/sprite-apps-large.png'... Optimizing... Error: Unrecognized option: -clobber Writing sprite 'webroot/rsrc/image/sprite-apps-large-X2.png'... Optimizing... Error: Unrecognized option: -clobber Done.//