Newsletter Plugin – 404 Error

Hello –

I installed the Newsletter plugin yesterday. When someone subscribes or unsubscribes, they are redirected to a 404 error page. Is there anything that can be done to resolve this? Further, when I go look at the codex for this particular plugin, I am given “newsletter/do/unsubscribe.php (inactive)” and “newsletter/do/subscribe.php (inactive).” Can someone please assist?

Thank you,

Holly