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After saving Jomsocial settings in the admin section I receive the following error:
Notice: Undefined index: in /var/www/sandbox/Joomla3/administrator/templates/isis/html/message.php on line 24
I'm using Jomsocial 3.1.0.1 with Joomla 3.2.1.
This is joomla issue, you need post this issue to Joomla forum.. actually this issue alrady fixed in Joomla repo, read here
github.com/joomla/joomla-cms/pull/2421