Saw the posting about error with image load and invite. I see that error is similar and understand it's been addressed in the release. I wanted to point out its occuring when I try to access the user profile.
Fatal error: Call to undefined method DateTime::diff() in /home/xxxx/public_html/components/com_comprofiler/plugin/user/plug_cbgroupjive/cbgroupjive.class.php on line 1027
The only solution for now is to completely disable groupjive.
Looking forward to next release.