Broken site.

I attempted to install the BPS plugin on my site, and promptly got a 500 error and the site went down.

I panicked and used FTP to delete the plugin and tried to delete any files that had been created by the plugin. The site came back up, but whenever I clicked on a post I would then get a 404 error.

I ran across this issue and tried adding this code

[ Moderator Note: Please post code or markup snippets between backticks or use the code button. Or better still – use the pastebin ]

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

to my site as a file name .htaccess, that seemed to do the trick at first, but then I found a number of small errors on the site.

I’m not sure what went wrong, or how to get things back to normal.
Any help would be appreciated.

Thanks!

http://wordpress.org/extend/plugins/bulletproof-security/