IOError: [Errno 2] No such file or directory: u''

[user]

How to Reproduce

While doing a POST operation on /admin/accounts/users, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{'__FORM_TOKEN': u'091882babf4cde455259fe91',
 'add': u' Add ',
 'cat_id': u'accounts',
 'email': u'',
 'name': u'',
 'panel_id': u'users',
 'password': u'1234',
 'password_confirm': u'1234',
 'path_info': None,
 'user': u'test1'}

User Agent was: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3

System Information

Trac	0.11.6
Python	2.5.4 (r254:67916, Dec 23 2008, 15:10:54) [MSC v.1310 32 bit (Intel)]
setuptools	0.6c11
SQLite	3.6.11
pysqlite	2.5.5
Genshi	0.5.1
mod_python	3.3.1
Subversion	1.6.6 (r40053)
jQuery:	1.2.6

Python Traceback

Traceback (most recent call last):
  File "c:\programme\bitnami trac stack\trac\lib\site-packages\Trac-0.11.6-py2.5.egg\trac\web\main.py", line 450, in _dispatch_request
    dispatcher.dispatch(req)
  File "c:\programme\bitnami trac stack\trac\lib\site-packages\Trac-0.11.6-py2.5.egg\trac\web\main.py", line 206, in dispatch
    resp = chosen_handler.process_request(req)
  File "c:\programme\bitnami trac stack\trac\lib\site-packages\Trac-0.11.6-py2.5.egg\trac\admin\web_ui.py", line 114, in process_request
    path_info)
  File "build\bdist.win32\egg\acct_mgr\admin.py", line 117, in render_admin_panel
    return self._do_users(req)
  File "build\bdist.win32\egg\acct_mgr\admin.py", line 188, in _do_users
    _create_user(req, self.env, check_permissions=False)
  File "build\bdist.win32\egg\acct_mgr\web_ui.py", line 71, in _create_user
    mgr.set_password(user, password)
  File "build\bdist.win32\egg\acct_mgr\api.py", line 143, in set_password
    if store.set_password(user, password):
  File "build\bdist.win32\egg\acct_mgr\htfile.py", line 46, in set_password
    self.userline(user, password))
  File "build\bdist.win32\egg\acct_mgr\htfile.py", line 100, in _update_file
    f = open(filename, 'a')
IOError: [Errno 2] No such file or directory: u''

[Remy Blank]

PluginIssue (​th:AccountManagerPlugin), and actually an InstallationIssue.