To clarify - you built project and moved it to the server, but you getting errors trying to access app in the browser, right?
Can you see any pages at all or it is some specific pages where you get error?
You do need DLL because it is referenced. Worse case you would need to remove any "Import Namespace=System.Web.Optimization" in master pages along with conditions where optimization turned on/off and then re-compile. For example, from:
<% if (BlogSettings.Instance.EnableOptimization) { %><linkhref="<%# BundleTable.Bundles.ResolveBundleUrl("~/admin/css")%>"rel="stylesheet"type="text/css"/><% } else { %><linkhref="~/admin/style.css"rel="stylesheet"type="text/css"/><linkhref="~/admin/colorbox.css"rel="stylesheet"type="text/css"/><linkhref="~/admin/tipsy.css"rel="stylesheet"type="text/css"/><% } %>
<linkhref="~/admin/style.css"rel="stylesheet"type="text/css"/><linkhref="~/admin/colorbox.css"rel="stylesheet"type="text/css"/><linkhref="~/admin/tipsy.css"rel="stylesheet"type="text/css"/>
