[Plugin: Enhanced Publication] Enhanced BibliPlug error

I’m having trouble installingen Enhanced BibliPlug. everytime I get the following fatal error. Is there anyone who knows how to fix this?

“Warning: require_once(/home/httpd/http/virtualhosts/_wordpress/wp-content/plugins/enhanced-bibliplug/bibliplug_query.php) [function.require-once]: failed to open stream: No such file or directory in /home/httpd/http/virtualhosts/_wordpress/wp-sites/www.inth.ugent.be/plugins/enhanced-bibliplug/bibliplug.php on line 45

Fatal error: require_once() [function.require]: Failed opening required ‘/home/httpd/http/virtualhosts/_wordpress/wp-content/plugins/enhanced-bibliplug/bibliplug_query.php’ (include_path=’./:/home/httpd/http/flwi/includes:/usr/share/php:/home/httpd/http/flwi/include’) in /home/httpd/http/virtualhosts/_wordpress/wp-sites/www.inth.ugent.be/plugins/enhanced-bibliplug/bibliplug.php on line 45″

https://www.ads-software.com/extend/plugins/enhanced-publication/