Hm, "addEventListener" seems to be a mootools method. EasySocial doesn't interfere with mootools if you have it running on the site. What errors did you explicitly get?
Hey Mark -- I upgraded to the latest (v1.2.22) yesterday and I'm still getting the same error. I see a v.1.3 build was released just after I upgraded, but I'd like to hold-off on that if possible seeing I'm launching very soon and would prefer to not do a 'major' update. Let me know your thoughts. Thanks.
Sorry for late reply to this,
We have applied some fix in this file -> JoomlaFolder/media/com_easysocial/config.php
Can you try again and see how it goes? Remember clear everything cache before you test.