I've been using trac happily for over a year on Red Hat 9. Recently we upgraded our system to Red Hat Enterprise Linux 64 bit. We copied all files to the new server and I re-installed trac from rpm's using the instructions at  <a href="http://trac.edgewall.org/wiki/TracOnRhel4">http://trac.edgewall.org/wiki/TracOnRhel4</a> I ran trac-admin /home/trac/trac_spt upgrade and everything was working, but after we did a final copy of user files, the trac wiki stopped working. The problems seemed to be related to my CGI configuration for apache, so I tried switching to mod_python. That works better, and all the subversion access pages are working, but when I try to access a wiki page, for example <a href="https://spt.uchicago.edu/trac/wiki/TitleIndex">https://spt.uchicago.edu/trac/wiki/TitleIndex</a> I get the error: Not Found The requested URL /trac/wiki.png/TitleIndex was not found on this server. httpd.conf contains: ## Allow everyone read access to trac documentation <Directory "/usr/share/trac/htdocs/">         Options Indexes MultiViews         AllowOverride None         Order allow,deny         Allow from all </Directory> # Set up mod_python access to SPT_Software trac project <Location /trac>     SetHandler mod_python     PythonHandler trac.web.modpython_frontend     PythonOption TracEnv /home/trac/trac_spt     PythonOption TracUriRoot /trac </Location> # You need something like this to authenticate users <Location "/trac/login">     AuthType Basic     AuthName "SPT Wiki"     AuthUserFile /home/trac/trac.htpasswd     Require valid-user </Location> # Require use of SSL encrypted conection for trac wiki <Location "/trac"> SSLRequireSSL </Location> trac.ini contains: [project] url = <a href="http://example.com/">http://example.com/</a> footer =  Visit the Trac open source project at <a href=" <a href="http://trac.edgewall.com/">http://trac.edgewall.com/</a>"><a href="http://trac.edgewall.com/">http://trac.edgewall.com/</a></a> name = SPT_Software descr = South Pole Telescope Project icon = trac.ico [header_logo] src = trac_banner.png alt = Trac height = 73 link = <a href="http://trac.edgewall.com/">http://trac.edgewall.com/</a> width = 236 [logging] log_file = trac.log log_level = DEBUG log_type = none [attachment] max_size = 5000000 [trac] default_charset = iso-8859-15 templates_dir = /usr/share/trac/templates repository_dir = /home/svnroot base_url = /trac ignore_auth_case = false permission_store = DefaultPermissionStore check_auth_ip = true database = sqlite:db/trac.db metanav = login,logout,settings,help,about mainnav = wiki,timeline,roadmap,browser,tickets,newticket,search [account-management] module = trac.Account enabled = true registration_enabled = false password_format = htpasswd password_file = /home/root/httpd_passwd I'm running Apache 2.0 and Python 2.3. Any help will be greatly appreciated. Ken Aird <a href="http://www.kenaird.com">http://www.kenaird.com</a> <a href="http://spt.uchicago.edu">http://spt.uchicago.edu </a>