router - Durandal routing issue -

i have small spa test app durandal. have wired issue. first, folder structure is:
app
--durandal
--viewmodels
----user.js
--views
----user.html
--main.js
, when structure works fine. if create structure
app
--durandal
--_user
----viewmodels
------user.js
----views
------user.html

i error localhost/app/_users/viewmodels/users.html 404 not found. , happens after user.js loaded require.js.

my main.js looks like

require.config({    paths: { "text": "../durandal/amd/text" } });  define(function (require) {    var system = require('../durandal/system'),       app = require('../durandal/app'),       router = require('../durandal/plugins/router'),       viewlocator = require('../durandal/viewlocator'),       logger = require('../logger');     system.debug(true);     app.start().then(function () {       // route use conventions modules       // assuming viewmodels/views folder structure       router.useconvention();         // when finding module, replace viewmodel string        // view find partner view.       // [viewmodel]s/sessions --> [view]s/sessions.html       // otherwise can pass paths modules, views, partials       // defaults viewmodels/views/views.        viewlocator.useconvention();        app.setroot('viewmodels/shell');        // override bad route behavior write        // console log , show error toast       router.handleinvalidroute = function (route, params) {          logger.logerror('no route found', route, 'main', true);       };    }); }); 

i assume issue has router.useconvention(); or viewlocator.useconvention(); simple can't find reason kind of behavior.

any help, suggestion, idea how solve this?

thanks

this because of behavior of view locator, defaults looks views/viewmodels in first structure describe.

you can change behavior supplying own view locator function, or calling useconvention() useconvention(modulespath, viewspath, areaspath)