Visual Studio 2013 breaks IIS configuration

Hello

In IIS, under Default Web Site, I run multiple ASP.NET websites as Applications. All is good until I open one such website from Visual Studio 2013 Preview and/or RC. No matter if I open it from file system or from IIS, I get this error while the project is loaded in VS 2013:

VirtualPath was outside the current application root.
Parameter name: virtualPath

Here's my solution file:

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2013
VisualStudioVersion = 12.0.20827.3
MinimumVisualStudioVersion = 10.0.40219.1
Project("{E24C65DC-7377-472B-9ABA-BC803B73C61A}") = "Cdc", "http://localhost/Cdc", "{1828CC0B-D177-47D3-B3BB-F521D51F54D7}"
	ProjectSection(WebsiteProperties) = preProject
		UseIISExpress = "false"
		TargetFrameworkMoniker = ".NETFramework,Version%3Dv4.5"
		Debug.AspNetCompiler.VirtualPath = "/Cdc"
		Debug.AspNetCompiler.PhysicalPath = "D:\Work\Web.NET\Cdc\"
		Debug.AspNetCompiler.TargetPath = "PrecompiledWeb\Cdc\"
		Debug.AspNetCompiler.Updateable = "true"
		Debug.AspNetCompiler.ForceOverwrite = "true"
		Debug.AspNetCompiler.FixedNames = "false"
		Debug.AspNetCompiler.Debug = "True"
		Release.AspNetCompiler.VirtualPath = "/Cdc"
		Release.AspNetCompiler.PhysicalPath = "D:\Work\Web.NET\Cdc\"
		Release.AspNetCompiler.TargetPath = "PrecompiledWeb\Cdc\"
		Release.AspNetCompiler.Updateable = "true"
		Release.AspNetCompiler.ForceOverwrite = "true"
		Release.AspNetCompiler.FixedNames = "false"
		Release.AspNetCompiler.Debug = "False"
		SlnRelativePath = "D:\Work\Web.NET\Cdc\"
	EndProjectSection
EndProject
Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|Any CPU = Debug|Any CPU
	EndGlobalSection
	GlobalSection(ProjectConfigurationPlatforms) = postSolution
		{1828CC0B-D177-47D3-B3BB-F521D51F54D7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
		{1828CC0B-D177-47D3-B3BB-F521D51F54D7}.Debug|Any CPU.Build.0 = Debug|Any CPU
	EndGlobalSection
	GlobalSection(SolutionProperties) = preSolution
		HideSolutionNode = FALSE
	EndGlobalSection
EndGlobal

If i close VS the application starts working again. Can I fix this ? Or can I at least stop VS 2013 from modifying IIS configuration ?

Thanks, 

Mihai