TFS Branch not running on local IIS virtual directory

[xMetalDetectorx]

I have a Dev branch on my machine, and I publish into a directory and get to it via Local IIS. I recently created a branch onto my machine from the dev version, but when I deploy it into the directory, I am receiving an error when I hit the website.

There is some code in my Global.asax which gets IIS bindings. The dev branch executes this just fine, but the prod branch results in this error:

System.IO.FileNotFoundException: The filename, directory name, or volume label syntax is incorrect. (Exception from HRESULT: 0x8007007B)

on the line:

var sitesSection = Microsoft.Web.Administration.WebConfigurationManager.GetSection(null, null, "system.applicationHost/sites");

Does anyone have any ideas why this could be happening for this particular branch? When I switch back to original dev branch, everything is fine.

If I breakpoint there and skip it, the next error it tells me is that it can't login to my database because of an invalid password, but all DB information is the same in both projects.

Any help or advice is greatly appreciated!