.htaccess problem

[kinexmedia]

# 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>
ErrorDocument 401 /home/happyjumper/jumper.com/errors/401/
ErrorDocument 403 /home/happyjumper/jumper.com/errors/403/
ErrorDocument 404 /home/happyjumper/jumper.com/errors/404/
ErrorDocument 500 /home/happyjumper/jumper.com/errors/500/
ErrorDocument 503 /home/happyjumper/jumper.com/errors/503/
# END WordPress

Can someone help me debug why this is happening?

Thanks!

[Beverleyh]

Why what is happening?

Please describe the problem clearly and somebody might be able to offer suggestions to fix it.