python mechanize cannot send a form on tumblr ask_form

python mechanize cannot send a form on tumblr ask_form

trying to automate sending a form to the ask_form (ask me anything) on
tumblr using : http://www.tumblr.com/ask_form/[site]
example: http://www.tumblr.com/ask_form/thinkpurplenae.tumblr.com
i have tried simply sending via br.submit() and
urlopen(br.click("ask_button")) but both end in an error (an error on the
tumblr site not in the script)
br.open('http://www.tumblr.com/ask_form/thinkpurplenae.tumblr.com'
br.select_form(nr=0)
br.form['post[one]']="blah blah"
l4=mechanize.urlopen(br.click(id="ask_button"))
l40=l4.read()
print l40
and i get
Error Sorry, we seem to be having technical trouble. Please try again later.
any idea what I can do to solve this?