[Downlevel] Roslyn fails on IIS Express

[victorhurdugaci]

This is bug when running on CoreCLR Win7/2008R2.

Run Music on IIS Express and try to access the home page:

Oops.
500 Internal Server Error
Microsoft.Framework.Runtime.Roslyn.RoslynCompilationException
error CS0041: Unexpected error writing debug information -- 'Retrieving the COM class factory for component with CLSID {0AE2DEB0-F901-478B-BB9F-881EE8066788} failed due to the following error: 80070057 The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG)).'
   at Microsoft.Framework.Runtime.Roslyn.RoslynProjectReference.Load(IAssemblyLoaderEngine loaderEngine)
   at Microsoft.Framework.Runtime.Loader.ProjectAssemblyLoader.Load(String name)
   at klr.host.LoaderContainer.Load(String name)
   at klr.hosting.RuntimeBootstrapper.<>c__DisplayClass0.<ExecuteAsync>b__7(AssemblyName assemblyName)
   at klr.hosting.DelegateAssemblyLoadContext.Load(AssemblyName assemblyName)
   at System.Runtime.Loader.AssemblyLoadContext.LoadFromAssemblyName(AssemblyName assemblyName)
   at System.Runtime.Loader.AssemblyLoadContext.Resolve(IntPtr gchManagedAssemblyLoadContext, AssemblyName assemblyName)
System.IO.FileLoadException
Could not load file or assembly 'MusicStore, Culture=neutral, PublicKeyToken=null' or one of its dependencies. General Exception (Exception from HRESULT: 0x80131500)
   at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
   at Microsoft.AspNet.Hosting.Startup.StartupLoader.LoadStartup(String applicationName, String environmentName, IList`1 diagnosticMessages)
   at Microsoft.AspNet.Loader.IIS.KlrHttpApplication.HeliosStartupLoaderProvider.WrappingStartupLoader.LoadStartup(String applicationName, String environmentName, IList`1 diagnosticMessages)
   at Microsoft.AspNet.Hosting.Startup.StartupManager.LoadStartup(String applicationName, String environmentName)
   at Microsoft.AspNet.Hosting.HostingEngine.EnsureApplicationStartup(HostingContext context)
   at Microsoft.AspNet.Hosting.HostingEngine.EnsureApplicationDelegate(HostingContext context)
   at Microsoft.AspNet.Hosting.HostingEngine.Start(HostingContext context)
   at Microsoft.AspNet.Loader.IIS.KlrHttpApplication.ApplicationStart(IHttpApplication application)
   at Microsoft.AspNet.Loader.IIS.HttpApplicationBase.InvokeApplicationStart(IHttpApplication application)

[Eilon]

@davidfowl can you take a look for Beta?