Using WordPress 3.1.3 and trying to install Events Manager 4.x
From the Widget, when an event is selected, the following message appears
Fatal error: ob_start() [ref.outcontrol]: Cannot use output buffering in output buffering display handlers in /home/thecryst/public_html/wp-content/plugins/events-manager/em-events.php on line 37
I have removed all instances of EM from the MySql database as well as removing them from the wp_options and then reinstalled the plugin.
reloaded EM and the message still appears.