.html site 500 internal server error

Ok I've read a lot of threads, tried a lot of fixes and cannot get my site to show up now. My .htaccess is this:

Code (Text):

1. AddType text/html .shtml
2. AddHandler server-parsed .html
3. AddHandler server-parsed .shtml
4. AddType x-httpd-php .php .htm .html
5. Options Indexes FollowSymLinks Includes
6.  
7. <IfModule mod_rewrite.c>
8.     RewriteEngine On
9.     RewriteBase /
10.     RewriteCond %{REQUEST_FILENAME} ^(.*).htm [NC,OR]
11.     RewriteCond %{REQUEST_FILENAME} ^(.*).html [NC]
12.     RewriteRule ^(.*)       /passthru.php?file=$1
13. </IfModule>

This causes the 500 internal server error.

This for my .htaccess makes the site appear but the network ads do not show up, instead I get the [an error occurred while processing this directive]

Code (Text):

1. AddType text/html .shtml
2. AddHandler server-parsed .html
3. AddHandler server-parsed .shtml
4. Options Indexes FollowSymLinks Includes
5.  
6.  

What can I do to fix this so the ads will show and the site still shows up?

Christine

 

In my own experience error 500 occurs when mod_rewrite is not enable on your web server.

Uncomment #mod_rewrite in your httpd.conf, or if you are hosted on a shared service, ask your hosting provider if mod_rwrite is enabled.