Errors installing new environments using the Account Manager plug-in

Spent the better part of two days trying to get our Trac
installation
to install new environments after installing the Account
Manager plug-
in but with no success.

Originally I had an install of Trac 0.10.2.x running on RHE4
(CentOS)
using Python 2.3 and Apache 2.0 and all was well. After some
bother, I
got the 0.10/Py2.3 compatible release of the Account Manager
plug-in
installed and working with existing sites.

Subsequently I have attempted several installs of new
environments
into directories I have either aliased or made virtual hosts
in Apache
config but none work. I tried upgrading to Trac 0.10.3.1 but
seems to
have made no difference.

After I got the AM plug-in working with my existing
environments I
created a global trac.ini file with the required
authentication
methods etc...

Below are the debug error output I get and snippets from the
global
trac.ini file and httpd.conf files. Hope someone is able to
help, I
really need to get web-based user management up and running
to
continue with this tool.

Error Output
------------------------------------------------------------
------------------------------------------------------------
--------
Mod_python error: "PythonHandler
trac.web.modpython_frontend"

Traceback (most recent call last):

  File
"/usr/lib/python2.3/site-packages/mod_python/apache.py&
quot;, line
299, in HandlerDispatch
    result = object(req)

  File "/usr/lib/python2.3/site-packages/trac/web/
modpython_frontend.py", line 87, in handler
    gateway.run(dispatch_request)

  File
"/usr/lib/python2.3/site-packages/trac/web/wsgi.py"
;, line 87,
in run
    response = application(self.environ,
self._start_response)

  File
"/usr/lib/python2.3/site-packages/trac/web/main.py"
;, line 377,
in dispatch_request
    env = _open_environment(env_path, run_once=run_once)

  File
"/usr/lib/python2.3/site-packages/trac/web/main.py"
;, line 58,
in _open_environment
    env_cache[env_path] = open_environment(env_path)

  File
"/usr/lib/python2.3/site-packages/trac/env.py",
line 435, in
open_environment
    if env.needs_upgrade():

  File
"/usr/lib/python2.3/site-packages/trac/env.py",
line 313, in
needs_upgrade
    db = self.get_db_cnx()

  File
"/usr/lib/python2.3/site-packages/trac/env.py",
line 182, in
get_db_cnx
    return DatabaseManager(self).get_connection()

  File
"/usr/lib/python2.3/site-packages/trac/db/api.py",
line 73, in
get_connection
    connector, args = self._get_connector()

  File
"/usr/lib/python2.3/site-packages/trac/db/api.py",
line 84, in
_get_connector
    scheme, args = _parse_db_str(self.connection_uri)

  File
"/usr/lib/python2.3/site-packages/trac/db/api.py",
line 110, in
_parse_db_str
    scheme, rest = db_str.split(':', 1)

ValueError: unpack list of wrong size

------------------------------------------------------------
------------------------------------------------------------
-------


/usr/share/trac/trac.ini snippets
------------------------------------------------------------
------------------------------------------------------------
-------
# -*- coding: utf-8 -*-
[components]
webadmin.* = enabled
acct_mgr.api.AccountManager = enabled
acct_mgr.admin.AccountManagerAdminPage = enabled
acct_mgr.htfile.HtPasswdStore = enabled
trac.web.auth.LoginModule = disabled
acct_mgr.web_ui.LoginModule = enabled
acct_mgr.web_ui.RegistrationModule = enabled

[account-manager]
; configure the plugin to store passwords in the htpasswd
format:
;password_format = htpasswd
; with Trac 0.10 use this instead:
password_store = HtPasswdStore

; the file where user accounts are stored
; the webserver will need write permissions to this file
; and its parent folder
password_file = /var/trac/trac.htpasswd

[trac]
authz_file =
authz_module_name =
base_url =
check_auth_ip = true
database =
default_charset = iso-8859-15
default_handler = WikiModule
#default_handler = LoginModule
htdocs_location =
ignore_auth_case = false
mainnav =
wiki,timeline,roadmap,browser,tickets,newticket,search
metanav = login,logout,settings,help,about
permission_store = DefaultPermissionStore
repository_dir =
repository_type = svn
# request_filters = <set in global trac.ini>
# templates_dir = <set in global trac.ini>
timeout = 20

------------------------------------------------------------
------------------------------------------------------------
-------


httpd.conf
------------------------------------------------------------
------------------------------------------------------------
-------
Alias /trac2 "/path/to/env"

<Location /trac2>
   PythonDebug on
   SetEnv PYTHON_EGG_CACHE /path/to/env
   SetHandler mod_python
   PythonHandler trac.web.modpython_frontend
   PythonOption TracEnv /path/to/env
   #PythonOption TracUriRoot /path/to/env
</Location>

<Location "/trac2/login">
</Location>
------------------------------------------------------------
------------------------------------------------------------
--------

Grateful for any help,
Matt


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