Thanks for the reply. However, I get the same response using both sets of code. I think the code you posted and mine are functionally the same, if my reading of the docs is correct, except that submit_form does not click a button for the form submission. Since the CGI is looking for the submit button parameter to be present and true, I think I need the "click" method there.
Sean
Comment on Re^2: WWW::Mechanize and submit button question
From the docs: "Submits the page, without specifying a button to click. Actually, no button is clicked at
all." I think that using your code you posted and the $mech->submit(); rather than the $mech->click(); method may help.