Autoresponder Question - For Squeeze Page TO Sales Page

Hi,

I have a squeeze page for my website.
After you sign up for my list, you get re-directed to SALES PAGE.

The problem is, you get re-directed to SALES page the FIRST TIME
you sign up.

The second you sign up, it goes to ERROR PAGE (I made).

Should I just make the error page (to sales page)?

This is because in getresponse, you have two options to put:
1) Confirmation URL:
2) Error Page URL:

Currently I put
1) Confirmation URL: MY SALES PAGE
2) Error Page URL: AN ERROR PAGE I MADE


Should I change this to:

1) Confirmation URL: MY SALES PAGE
2) Error Page URL: MY SALES PAGE


because many of my previous customers say they cant
go the sales page when trying to sign in from the squeeze page
since they already signed up for the list before...

By the way, for "Allow Duplicates", I put NO....when I put YES, it
doesn't go to sales page either (unless you click on YES, I want to subscribe
again...which most people won't do).


Has anyone had this problem? I would appreciate any of your
help to fix this problem.

Thank you,

BJ

PS...basically i want all my list & continued list people to
use my squeeze page to GO TO THE SALES PAGE...that's it.