When using child routes with angular2\'s router \"3.0\", there is no need to declare them in the parent router config (before, you had to do something like /child...>
/child...>
Simple solution is to reorder modules in the 'imports' array in app module file - ensure app/root router is the last item in the array; for example
@NgModule({ imports: [FeatureModule1, FeatureModule2, FeatureModule3, AppRouterModule] ... ... })