Warnings and Notices from e-newsletter

I think this might be helpful to the e-Newsletter developer, these are some of the messages that appear when WP_DEBUG is set to true:

<b>Warning</b>: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /[domain removed]/wp-settings.php:62) in <b>/[domain removed]/wp-content/plugins/e-newsletter/e-newsletter.php</b> on line <b>1494</b>

<b>Warning</b>: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /[domain removed]/wp-settings.php:62) in <b>/[domain removed]/wp-content/plugins/e-newsletter/e-newsletter.php</b> on line <b>1494</b>

<b>Notice</b>: Undefined index: newsletter_action in <b>/[domain removed]/wp-content/plugins/e-newsletter/e-newsletter.php</b> on line <b>295</b>

<b>Notice</b>: Undefined index: page in <b>/[domain removed]wp-content/plugins/e-newsletter/e-newsletter.php</b> on line <b>167</b>

<b>Notice</b>: Undefined index: page in <b>/[domain removed]/wp-content/plugins/e-newsletter/e-newsletter.php</b> on line <b>200</b>

<b>Notice</b>: Undefined index: newsletter_action in <b>/[domain removed]/wp-content/plugins/e-newsletter/e-newsletter.php</b> on line <b>207</b>