Installer Error Messages
From MODx Wiki
Many of the issues you may face when installing MODx are server related. Whilst MODx has been tested on many different configurations, some pose problems. A number of checks are made during the install which should confirm that your environment is OK. If they fail, then you will need to resolve the issue before continuing. We're not doing this to be awkward - we're doing this to save trouble down the line.
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Error Messages
Checking if sessions are properly configured: Failed!
- If you have ZoneAlarm firewall cookie and ad blocking feature (or similar) on your client computer, disable for the duration of install.
- If there is no session.save_path defined and/or the value for use_trans_sid is set to 1 (true) in your configuration, make the change suggested by OpenGeek at http://modxcms.com/forums/index.php/topic,2658.msg23321.html#msg23321 which will set the save path.
- Speak to your host.
Failed to update setting value!
Once you've logged into your site via the manager page (e.g. www.yourdomain.com/manager) you may get this error while editing the Tools-->Configuration page. Solutions?
Not Found
Seeing something like this on some of your pages?
Not Found The requested URL /features.php was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request. Apache/2.2.6 (Unix) mod_ssl/2.2.6 OpenSSL/0.9.8g DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.yourdomain.com Port 80
Chances are very good that you have attempted to enable friendly URLs under Tools-->Configuration. This requires some footwork with the Apache rewrite rules (either via the Apache config file or via an .htaccess file). Go and visit Friendly_URLs_Guide.
