Invalid address when testing subscription form

Hi,

I have never been able to get the widget to work. I have a list selected and all but when I’m putting in an email to test the for on the front end, I get the sendpress=post meaning the “Thank you for subscribing”
BUT
right above it, I get “Invalid address: You must provide at least one recipient email address.”
When I verify if the email has been saved on the list, that’s a negative my list is at 0.
I also seem to have no success at adding emails manually from the back-end whether I do a single email or bulk email method of adding.

Any help would be greatly appreciated.

http://wordpress.org/extend/plugins/sendpress/