Version 4.3.0

applications/convert/sources/Software/Calendar/Vbulletin.php

@@ -237,7 +237,7 @@ class _Vbulletin extends \IPS\convert\Software
 				'event_content'		=> $event['event'],
 				'event_saved'		=> $event['dateline'],
 				'event_start_date'	=> \IPS\calendar\Date::ts( $event['dateline_from'] ),
-				'event_end_date'	=> \IPS\calendar\Date::ts( $event['dateline_to'] ),
+				'event_end_date'	=> $event['dateline_to'] ? \IPS\calendar\Date::ts( $event['dateline_to'] ) : NULL,
 				'event_approved'	=> $event['visible'],
 				'event_recurring'	=> $recurring
 			);