I just upgraded to 18.104.22.168 and it broke my events pages. There is PHP error:
PHP Fatal error: Call to undefined function groups_get_user_groups() in events-manager-22.214.171.124/templates/forms/event/group.php on line 4
If I Google with the query "Call to undefined function groups_get_user_groups" and time frame "last month" I kind find several Events Manager using sites that are broken. It appears this is a common bug for this version.
I found another post about this error being related to Buddy Press. I however do not have Buddy Press installed, so it must be a more general bug.