Very sorry about that. This was in the JFBConnect forums so I immediately went to the JFBConnect component and forgot you were working with JLinked.
You should be all setup now to configure it how you want. The issue is that if you save while the DB Columns field is blank, it throws an error that can't be recovered from. We'll fix that in the next release, but until then, just don't leave that field blank. I put in some test values which you can replace with whatever the real column names should be.
Finally, there's one edit that should be made to the plugin file to fix a bug found by another tester. Please edit the /plugins/socialprofiles/customdb/customdb.php file, around line 51 you'll see:
$dbKey = $settings->get('db_key_value') == 'joomlaId' ? $this->joomlaId : $this->socialId;Update the joomlaId value to joomla_id as below:
$dbKey = $settings->get('db_key_value') == 'joomla_id' ? $this->joomlaId : $this->socialId;Without that change, if you are using the Joomla user ID as a key, it won't properly be set.
Please test again and let us know how that goes!
Thanks,
Alex