Hi,
I am a registered user and user of the group.
I enter the GJ group, then comes the warning:
Warning: array_shift() expects parameter 1 to be array, null given in /srv/www/vhosts/mysite.ch/httpdocs/components/com_comprofiler/plugin/user/plug_cbgroupjive/cbgroupjive.class.php on line 1335
I adjusted like you proposed in (#3430) Error is now away.