Denis Ciumbargi on "[Plugin: AddThis Social Sign In] Errors on wp-login page, cannot create user / login"

Hi, i have been using addthis services for 2 years now, he social sharing one and wanted to give the company extra credits and start using this new plugin.

Installed, all setup, created applications, used Janrain so knew things around with api oath etc.

When i am on my wp-login page and using twitter button for example this happens:

Warning: Cannot modify header information - headers already sent by (output started at /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/includes/OAuth.php:897) in /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/addthis_social_sign_in.php on line 299

Warning: Cannot modify header information - headers already sent by (output started at /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/includes/OAuth.php:897) in /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/addthis_social_sign_in.php on line 302

Warning: Cannot modify header information - headers already sent by (output started at /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/includes/OAuth.php:897) in /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/addthis_social_sign_in.php on line 308

When using linkedin

Warning: Cannot modify header information - headers already sent by (output started at /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/includes/OAuth.php:897) in /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/addthis_social_sign_in.php on line 340

Warning: Cannot modify header information - headers already sent by (output started at /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/includes/OAuth.php:897) in /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/addthis_social_sign_in.php on line 343

Warning: Cannot modify header information - headers already sent by (output started at /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/includes/OAuth.php:897) in /home/content/35/8355835/html/wp-content/plugins/addthis-social-sign-in/addthis_social_sign_in.php on line 346

Google, yahoo and facebook seemed to worked at the moment of testing.

The website is sansapentrusansa.org and i also use buddypress so any support of the Adthis SSI for that will be awesome.

Also, a widget / shortcode not the php template thing would be great!

http://wordpress.org/extend/plugins/addthis-social-sign-in/