I have a problem when you install Kohana.
I removed the install.php file, I then printed the error
Kohana_HTTP_Exception [ 404 ]: Unable to find a route to match the URI: kohana-3.3.3.1
SYSPATH/classes/Kohana/Request.php [ 986 ]
It is possible you don't have any routes defined, that case see the guide
Otherwise you may need to have a catch all route like the one below:
// catch all route
Route::set('catch-all', '<any>', array('any' => '.*'))
->defaults(array(
'controller' => 'my_controller',
'action' => 'catchall',
));