in the email server settings, you have used "(&0)" as the path to pear, the organization and the x-mailer. using this for the path to pear is causing the pear error, it is also causing the other email not found error.
for the path to pear, you can usually leave it blank if the host has properly configured the php server t look in the pear install directory. other wise, you will need to enter the server path to the pear package, your host will need to tell you what the correct path is.