3.1.2 not sending?

I just moved a new client’s site to our server and upgraded them from WP 2.6 to 3.1.2. No changes to the template.

They were set up to use your plugin. I can’t get it to mail anything…. Just sits there and spins.

PHP is throwing an error:

PHP Fatal error: Cannot redeclare email_textdomain() (previously declared in /opt/local/apache2/htdocs/holoscollaborative/content/wp-content/plugins/wp-email/wp-email.php:55) in /opt/local/apache2/htdocs/HolosCollaborative/content/wp-content/plugins/wp-email/wp-email.php on line 56, referer: https://holoscollaborative.com/portfolio/emailpopuppage/

Any ideas/pointers?

Thanks.