I managed to fix this (via a slight hack, admittedly).
Open the wp-events-functions.php file in the plugin. go to around line 333 where it says:
$output .= stripslashes(html_entity_decode($footer));
and then change it to read:
$output .= stripslashes(html_entity_decode($footer));
$output = str_replace("\n", "", $output);
(i.e. you add the second line in). And voila.