Fancy URL give me 404

[convicta]

When i try to use my fancy URL like this domain.com/mapgroup/my-map it doesn't work i get error 404
I have to turn of the fancy URL complete to get the map to work. Now it look like this
mapgroup/my-map/#!/map=79
Any idea how to make the fancy URL to work like above example?

i use this in my htaccess

RewriteEngine On RewriteBase /wordpress/ RewriteRule ^index.php$ - [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /wordpress/index.php [L]