I'm not sure why you'd see that in the admin area. With JFBConnect v6.0, we added LinkedIn integration and JLinked is no longer required. There is a 'migration' tool built-in to JFBConnect that can be accessed from the JFBConnect -> Configuration -> LinkedIn tab to import your previous settings and user-mappings from JLinked and then disable/uninstall JLinked entirely.
You should run that tool. If you can't access the admin area at all, you should disable the JLinked System plugin by doing the following:
* Edit the /plugins/system/jlinkedsystem/jlinkedsystem.php file
* Around line 41, you'll see:
function __construct(& $subject, $config)
{
* Directly after that line, simply add "return;" so it looks like:
function __construct(& $subject, $config)
{
return;
That will prevent the JLinked System plugin from loading and should let you access the admin area to perform the migration and disable JLinked completely.
I hope that helps, but if you have any other questions or issues, please let me know.
Thanks,
Alex