Plugin updated now not working

Nothing was changed except the update. Any suggestions for this error that is showing on the page?

Fatal error: Call to undefined function youtube_widget() in /homepages/43/d373306896/htdocs/wp-content/themes/sca-custom/video-page.php on line 41

Thanks
dk

http://ww.wp.xz.cn/extend/plugins/youtube-with-style/