codeigniter guru needed

I am looking for an experienced CodeIgniter programmer who can help me get my work environment setup -- either via email or teamviewer. This could lead to additional work. Problem: Codeigniter controller in subdirectory not working in virtual host I need help with CodeIgniter -- trying to it to work in virtual host envirnoment in Ampps. I have been following the following tutorial: [login to view URL] I am trying to have two installations of CodeIgniter running in two directories: /students /teachers [login to view URL] -> goes to /teachers directory [login to view URL] -> goes to /students directory I have the above working on my local machine. The different URL's take me to the correct directory. CI works. Problem arises when I try to access controller using redirect. if I try to redirect('error') I get: [login to view URL] Also get an "internal server error" if I type in [login to view URL] I get an "internal server error" if I type in [login to view URL] I get desired result It works if I try to load view directly in $this->load->view('error') I think I need help with the urls and paths. Any guidance most gratefully received. ------------ Nothing particularly enlightening in CI log files In Apache logs I find: Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace. Things I have changed: ----------------- htaccess in root - changed rewrite base. Also takes out [login to view URL] <IfModule mod_rewrite.c> RewriteEngine On RewriteBase /students/ RewriteCond %{REQUEST_URI} ^system.* RewriteRule ^(.*)$ [login to view URL]$1 [L] RewriteCond %{REQUEST_URI} ^application.* RewriteRule ^(.*)$ [login to view URL]$1 [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ [login to view URL]$1 [L] </IfModule> <IfModule !mod_rewrite.c> ErrorDocument 404 [login to view URL] </IfModule> -------------------------- application/[login to view URL] $config['base_url'] = $_SERVER['HTTP_HOST']; As per tutorial. Needs to be dynamic. ------------------------ my Apache [login to view URL] file NameVirtualHost [login to view URL] NameVirtualHost *:80 <VirtualHost *:80> DocumentRoot "C:/Program Files/Ampps/www/teachers" ServerName [login to view URL] ServerAlias [login to view URL] <Directory "C:/Program Files/Ampps/www/teachers"> Options Indexes FollowSymLinks Includes ExecCGI AllowOverride All Require all granted </Directory> </VirtualHost> <VirtualHost *:80> DocumentRoot "C:/Program Files/Ampps/www/students" ServerName [login to view URL] ServerAlias *.[login to view URL] <Directory "C:/Program Files/Ampps/www/students"> Options Indexes FollowSymLinks Includes ExecCGI AllowOverride All Require all granted </Directory> </VirtualHost> --------------------------- [login to view URL] in root kept as is. Things got worse when I tried to change these $system_path = 'system'; $application_folder = 'application';