wwinter86 on "Wordpress Duplicator Errors"

When I try to use the Duplicator (0.5.2) plugin I get the following san error:

Server Status:   200 -OK
Error Message:

Fatal error: Call to a member function GetServerChecks() on a non-object in /home/wwinter/public_html/wp/wp-content/plugins/duplicator/views/actions.php on line 47

and if I skip scan and try to just build a package I get this error:

Server Status: 200 -OK
Error Message:

Fatal error: Call to a member function Build() on a non-object in /home/wwinter/public_html/wp/wp-content/plugins/duplicator/classes/task.php on line 18

Any ideas please?