1. How to install the FreeCMS?
  2. How to solve the config file permission problem during installation?
  3. Why the after installation the FreeCMS is not running?

How to install the FreeCMS?

At first you have to upload files to hosting server through FTP. Then create a database in your hosting control panel and start installation by the link www.YourDomain.com/install/. During installation you will be asked to enter database name, server, user and password information.

How to solve the config file permission problem during installation?

If the PHP running on your hosting don't allowed to write file you have to change the config.php file's permission setting it 777(rwx-rwx-rwx). It may be done in hosting control panel or in FTP manager.

Why the after installation the FreeCMS is not running?

Probably it happened cause of templates_c directory's permission problem. You can easy fix it setting 777 (rwx-rwx-rwx) permission to templates_c directory.