id	summary	reporter	owner	description	type	status	priority	component	severity	resolution	keywords	cc	release
9942	'Headers Already Set' error after password reset	rjollos	hasienda	"I'm running the latest version of the AccountManagerPlugin, r11364, and Trac 0.12.3. After creating a user account and logging in as that user (to work around #9252 / #9843), I reset the users password to force them to change it on first login. When the users logs in, they see the following error:
[[Image(HeadersAlreadySet.png,100%)]]

Upon attempting navigate to any other page, they are redirected to the ''Change password'' page and prevented from accessing any other page before changing their password:

[[Image(PleaseChangeYourPassword.png,100%)]]

Traceback:
{{{
2012-04-03 16:43:07,069 Trac[main] ERROR: Internal Server Error:
Traceback (most recent call last):
  File ""/usr/local/python26_trac12/lib/python2.6/site-packages/Trac-0.12.3-py2.6.egg/trac/web/main.py"", line 522, in _dispatch_request
    dispatcher.dispatch(req)
  File ""/usr/local/python26_trac12/lib/python2.6/site-packages/Trac-0.12.3-py2.6.egg/trac/web/main.py"", line 269, in dispatch
    self._post_process_request(req)
  File ""/usr/local/python26_trac12/lib/python2.6/site-packages/Trac-0.12.3-py2.6.egg/trac/web/main.py"", line 365, in _post_process_request
    f.post_process_request(req, *(None,)*extra_arg_count)
  File ""build/bdist.linux-x86_64/egg/acct_mgr/web_ui.py"", line 256, in post_process_request
    req.redirect(redirect_url)
  File ""/usr/local/python26_trac12/lib/python2.6/site-packages/Trac-0.12.3-py2.6.egg/trac/web/api.py"", line 383, in redirect
    self.end_headers()
  File ""/usr/local/python26_trac12/lib/python2.6/site-packages/Trac-0.12.3-py2.6.egg/trac/web/api.py"", line 321, in end_headers
    self._write = self._start_response(self._status, self._outheaders)
  File ""/usr/local/python26_trac12/lib/python2.6/site-packages/Trac-0.12.3-py2.6.egg/trac/web/_fcgi.py"", line 1241, in start_response
    assert not headers_set, 'Headers already set!'
AssertionError: Headers already set!
}}}"	defect	closed	low	AccountManagerPlugin	normal	fixed	login password reset		0.12