Strange error

I’m trying to setup WordPress Social Login with the BuddyPress Better Registration, and so far I have only connected Google, not Facebook or any other social accounts, just to test it all. When I try to register as a new user on my site, after clicking the Google button, I get this error message that seems to involve both plugins. Can you help me:

Warning: include_once(/var/www/forkyndelse.dk/public_html/undervisning/wp-content/plugins/wordpress-social-login//hybridauth/Hybrid/Auth.php) [function.include-once]: failed to open stream: No such file or directory in /var/www/forkyndelse.dk/public_html/undervisning/wp-content/plugins/better-bp-registration/core/facebook.php on line 9

Warning: include_once() [function.include]: Failed opening ‘/var/www/forkyndelse.dk/public_html/undervisning/wp-content/plugins/wordpress-social-login//hybridauth/Hybrid/Auth.php’ for inclusion (include_path=’.’) in /var/www/forkyndelse.dk/public_html/undervisning/wp-content/plugins/better-bp-registration/core/facebook.php on line 9

Warning: Cannot modify header information – headers already sent by (output started at /var/www/forkyndelse.dk/public_html/undervisning/wp-content/plugins/better-bp-registration/core/facebook.php:9) in /var/www/forkyndelse.dk/public_html/undervisning/wp-includes/pluggable.php on line 1296

Warning: Cannot modify header information – headers already sent by (output started at /var/www/forkyndelse.dk/public_html/undervisning/wp-content/plugins/better-bp-registration/core/facebook.php:9) in /var/www/forkyndelse.dk/public_html/undervisning/wp-includes/pluggable.php on line 1299

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