Server Error in Sub Directory Application - Parser Error Message: File Master does not exist I recently uploaded a Web Application to our Windows 2008 R2 Web Server.
After adding the site to IIS7.5 and configuring all I was aware of, I went to browse it:

I get the security certificate warning, because we have not purchased a certificate yet. I acknowledge the warning, get prompted for (and enter) my Windows credentials, then get slapped with this Server Error that tells me The file '/apps/sub/codebase.Master' does not exist.

Let me point this out. Using Explore I can show you that the file codebase.Master does exist, but it is up one level from the /sub folder:

In an effort to get IIS 7.5 to understand that this sub app needs to use the Master Page in the parent folder, I have tried the following:


*

*Set Application Pool to .NET 4, Classic, with 32-bit support, and Application Pool Identity


*Set Folder to Application

*Reset (start & stop) the Application Pool

*Granted permission to ASP.NET account


*Master Page's Web.config file requires Windows Authentication:


*Sub Folder pages using Master Page have their own Web.config files that only include separate database connection strings:


*Tried Microsoft's Walkthrough Step 3 (virtualpath trick & manually defining Master Page)
<%@ MasterType virtualpath="~/Master1.master" %>

*Checked that the Master directive uses CodeBehind and not CodeFile
Perhaps this is worth noting, but I'm not sure:
When I browse the Root Application, none of the CSS styling or Javascript works. In the <head> tag of the Master Page, these are defined as:
<link rel="stylesheet" type="text/css" href="/Styles/apps.css" />
<link rel="Stylesheet" type="text/css" href="/Scripts/jquery-ui.css" />
<script type="text/javascript" src="/Scripts/jquery-1.11.2.min.js"></script>
<script type="text/javascript" src="/Scripts/jquery-ui.js"></script>

All of this also works from my PC while testing through Visual Studio 2010's debug mode.
I am obviously missing a key step.
Does anyone see what might be missing?