404 in Chrome, not IE, using asp.net bundles -

the issue when bundles minified , @ network tab in chrome see 404 url :

http://localhost:57000/bundles/underscore-min.map

no such directory exists.

if remove reference underscore.js in bundle 404 url : http://localhost:57000/bundles/angular-sanitize.min.js.map

this doesn't happen in ie. i've moved order around , there 1 file, , one, generate 404.

here's bundles generate issue.

 bundles.add(new scriptbundle("~/bundles/scripts")                             .include("~/scripts/angular/angular.js")                             .include("~/scripts/angular/angular-resource.js")                             .include("~/scripts/angular/angular-route.js")                             .include("~/scripts/angular/angular-animate.js")                             .include("~/scripts/angular/angular-touch.js")                             .include("~/scripts/angular/angular-sanitize.js")                             .include("~/scripts/ng-infinite-scroll.js")                             .include("~/scripts/underscore.js")                             .include("~/scripts/bootstrap.js")                             .include("~/scripts/md5.js")                             .includedirectory("~/scripts/app/", "*.js", true)); 

anyone seen before?