Pay to blog : issue - parse error

After I installed the Pay to blog plugin I got an issue. The following error is displayed on my register page : Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in /opt/data/www/lenantais.com/www/wp-content/plugins/buddypress/bp-core/bp-core-signup.php(104) : runtime-created function on line 1

You can try to register here http://www.lenantais.com/register