Problem with installation

Hi there,

i have problems to get this plugin running. Although i followed the steps described for the installation.
I got a clean WordPress setup with current version (3.5.1, but also tried 3.4.2 and 3.3). I unzipped the plugin and moved it to the wordpress plugins folder and activated the plugin.
My local wordpress is under localhost/wordpress.
So when the plugin would work correctly i should see the example page when i go to localhost/wordpress/wp_router/sample. Is this correct? When i go to this url, i get 404 error.
I also tried to configure my own custom routes, but same result.

Anyone got an idea what i am doing wrong?
Thanks!

https://www.ads-software.com/extend/plugins/wp-router/