Newbie help with .htaccess problem

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luckily I had my htaccess file pulled up from the last time I help a guy with this problem today. This is what my htaccess looks like can we stick this thread I remember reading about htaccess problems like 2 years ago.

Code:

Options -indexes
DirectoryIndex index.php
RewriteEngine On
RewriteBase /demo/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?$1 [L]

basically remove your / after ?