Thank you Joy for your answer! I also like EasySocial very much - it works fine at several my sites!
But then I have updated ES to version 2.0.25 one my site doesn't open any more!
Every time I get message "0 - Call to undefined method SocialPage::processScripts()"
All my attempts to correct this problem were not successful!
That's why I'd like to uninstall ES from one my site!