title: Could not load assembly 'Microsoft.Dnx.Runtime.Abstractions'
body: <p>I have done an upgrade of an <code>Asp.Net Core</code> application from <code>beta 7</code> to <code>RC1</code> by following the steps outlined in these two guidelines:</p>
  
  <p><a href="http://wildermuth.com/2015/10/20/Upgrading_from_ASP_NET_5_Beta_7_to_Beta_8" rel="nofollow noreferrer">Beta 7 to Beta 8</a></p>
  
  <p><a href="http://wildermuth.com/2015/11/18/Upgrading_ASP_NET_5_Beta_8_to_RC1" rel="nofollow noreferrer">Beta 8 to RC 1</a></p>
  
  <p>After the conversion the application compiles, but on startup I get the following exception:</p>
  
  <pre><code>An exception of type 'System.IO.FileNotFoundException' occurred in Microsoft.VisualStudio.Web.BrowserLink.Runtime.dll and wasn't handled before a managed/native boundary
  
  Additional information: Could not load file or assembly 'Microsoft.Dnx.Runtime.Abstractions, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
  </code></pre>
  
  <p>As can be seen in the screenshot below this exception occurs in <code>UseBrowserLink</code>.</p>
  
  <p><a href="https://i.stack.imgur.com/bX4fR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bX4fR.png" alt="enter image description here"></a></p>
  
  <p>Here is the dependency listing in my project.json file:</p>
  
  <pre><code>"version": "1.0.0-*",
  
  "dependencies": {
     "EntityFramework.Commands": "7.0.0-rc1-final",
     "EntityFramework.MicrosoftSqlServer": "7.0.0-rc1-final",
     "EntityFramework.MicrosoftSqlServer.Design": "7.0.0-rc1-final",
     "Microsoft.AspNet.Authentication.Cookies": "1.0.0-rc1-final",
     "Microsoft.AspNet.Authentication.Facebook": "1.0.0-rc1-final",
     "Microsoft.AspNet.Authentication.Google": "1.0.0-rc1-final",
     "Microsoft.AspNet.Authentication.MicrosoftAccount": "1.0.0-rc1-final",
     "Microsoft.AspNet.Authentication.Twitter": "1.0.0-rc1-final",
     "Microsoft.AspNet.Diagnostics": "1.0.0-rc1-final",
     "Microsoft.AspNet.Diagnostics.Entity": "7.0.0-rc1-final",
     "Microsoft.AspNet.Identity": "3.0.0-rc1-final",
     "Microsoft.AspNet.Identity.EntityFramework": "3.0.0-rc1-final",
     "Microsoft.AspNet.Mvc": "6.0.0-rc1-final",
     "Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-rc1-final",
     "Microsoft.AspNet.IISPlatformHandler": "1.0.0-rc1-final",
     "Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final",
     "Microsoft.AspNet.StaticFiles": "1.0.0-rc1-final",
     "Microsoft.AspNet.Tooling.Razor": "1.0.0-rc1-final",
     "Microsoft.Extensions.Configuration.Abstractions": "1.0.0-rc1-final",
     "Microsoft.Extensions.Configuration.Json": "1.0.0-rc1-final",
     "Microsoft.Extensions.Configuration.UserSecrets": "1.0.0-rc1-final",
     "Microsoft.Extensions.Logging": "1.0.0-rc1-final",
     "Microsoft.Extensions.Logging.Console": "1.0.0-rc1-final",
     "Microsoft.Extensions.Logging.Debug": "1.0.0-rc1-final",
     "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0-rc1-final",
     "Microsoft.Dnx.Runtime": "1.0.0-rc1-final"
  },
  
  "commands": {
     "web": "Microsoft.AspNet.Server.Kestrel",
     "ef": "EntityFramework.Commands"
  },
  </code></pre>
  
  <p>Does anyone know why I am getting this exception and how I could go about resolving it?</p>
  
  <p>UPDATE:</p>
  
  <p>Here is the output from when I start the application from <code>Visual Studio</code>:</p>
  
  <p>'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'Microsoft.Dnx.Host.Clr'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\runtimes\dnx-clr-win-x86.1.0.0-rc1-final\bin\Microsoft.Dnx.Host.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\runtimes\dnx-clr-win-x86.1.0.0-rc1-final\bin\Microsoft.Extensions.PlatformAbstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\runtimes\dnx-clr-win-x86.1.0.0-rc1-final\bin\Microsoft.Dnx.Loader.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\runtimes\dnx-clr-win-x86.1.0.0-rc1-final\bin\Microsoft.Dnx.ApplicationHost.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\runtimes\dnx-clr-win-x86.1.0.0-rc1-final\bin\Microsoft.Dnx.Runtime.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\runtimes\dnx-clr-win-x86.1.0.0-rc1-final\bin\Microsoft.Dnx.Compilation.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\runtimes\dnx-clr-win-x86.1.0.0-rc1-final\bin\Microsoft.Dnx.Compilation.Abstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Server.Kestrel\1.0.0-rc1-final\lib\dnx451\Microsoft.AspNet.Server.Kestrel.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Hosting\1.0.0-rc1-final\lib\dnx451\Microsoft.AspNet.Hosting.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Configuration\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Configuration.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Configuration.Abstractions\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Configuration.Abstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Configuration.CommandLine\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Configuration.CommandLine.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Configuration.Json\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Configuration.Json.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Configuration.EnvironmentVariables\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Configuration.EnvironmentVariables.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Hosting.Abstractions\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Hosting.Abstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.DependencyInjection.Abstractions\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.DependencyInjection.Abstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Http.Features\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Http.Features.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Hosting.Server.Abstractions\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Hosting.Server.Abstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Primitives\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Primitives.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Configuration.FileExtensions\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Configuration.FileExtensions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.FileProviders.Abstractions\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.FileProviders.Abstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Logging\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Logging.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Logging.Abstractions\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Logging.Abstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.DependencyInjection\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.DependencyInjection.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Http.Abstractions\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Http.Abstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Http\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Http.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\System.Diagnostics.DiagnosticSource\4.0.0-beta-23516\lib\dotnet5.2\System.Diagnostics.DiagnosticSource.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Threading\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Threading.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Diagnostics.Tracing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Diagnostics.Tracing.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.FileProviders.Physical\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.FileProviders.Physical.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\runtimes\dnx-clr-win-x86.1.0.0-rc1-final\bin\Microsoft.Dnx.Compilation.DesignTime.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'SubjectChooser'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'Anonymously Hosted DynamicMethods Assembly'. 
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Configuration.UserSecrets\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Configuration.UserSecrets.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Newtonsoft.Json\6.0.6\lib\net45\Newtonsoft.Json.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Numerics\v4.0_4.0.0.0__b77a5c561934e089\System.Numerics.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Mvc.Razor\6.0.0-rc1-final\lib\net451\Microsoft.AspNet.Mvc.Razor.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Mvc.ViewFeatures\6.0.0-rc1-final\lib\net451\Microsoft.AspNet.Mvc.ViewFeatures.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Mvc.Abstractions\6.0.0-rc1-final\lib\net451\Microsoft.AspNet.Mvc.Abstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Mvc\6.0.0-rc1-final\lib\net451\Microsoft.AspNet.Mvc.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Mvc.Core\6.0.0-rc1-final\lib\net451\Microsoft.AspNet.Mvc.Core.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\EntityFramework.Core\7.0.0-rc1-final\lib\dnx451\EntityFramework.Core.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\EntityFramework.MicrosoftSqlServer\7.0.0-rc1-final\lib\net451\EntityFramework.MicrosoftSqlServer.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Identity.EntityFramework\3.0.0-rc1-final\lib\net451\Microsoft.AspNet.Identity.EntityFramework.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Identity\3.0.0-rc1-final\lib\net451\Microsoft.AspNet.Identity.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Mvc.ApiExplorer\6.0.0-rc1-final\lib\net451\Microsoft.AspNet.Mvc.ApiExplorer.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Razor.Runtime\4.0.0-rc1-final\lib\net451\Microsoft.AspNet.Razor.Runtime.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Mvc.DataAnnotations\6.0.0-rc1-final\lib\net451\Microsoft.AspNet.Mvc.DataAnnotations.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Mvc.Formatters.Json\6.0.0-rc1-final\lib\net451\Microsoft.AspNet.Mvc.Formatters.Json.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Mvc.Cors\6.0.0-rc1-final\lib\net451\Microsoft.AspNet.Mvc.Cors.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.OptionsModel\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.OptionsModel.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Routing\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Routing.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.MemoryPool\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.MemoryPool.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Authorization\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Authorization.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.DataProtection\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.DataProtection.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Antiforgery\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Antiforgery.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.WebEncoders\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.WebEncoders.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Cryptography.Internal\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Cryptography.Internal.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.DataProtection.Abstractions\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.DataProtection.Abstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.WebEncoders.Core\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.WebEncoders.Core.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Mvc.Razor.Host\6.0.0-rc1-final\lib\net451\Microsoft.AspNet.Mvc.Razor.Host.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Razor\4.0.0-rc1-final\lib\net451\Microsoft.AspNet.Razor.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Caching.Abstractions\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Caching.Abstractions.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Caching.Memory\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Caching.Memory.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Cors\6.0.0-rc1-final\lib\net451\Microsoft.AspNet.Cors.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Ix-Async\1.2.5\lib\net45\System.Interactive.Async.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Remotion.Linq\2.0.1\lib\net45\Remotion.Linq.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Linq.Expressions\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Linq.Expressions.dll'. Module was built without symbols.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\EntityFramework.Relational\7.0.0-rc1-final\lib\net451\EntityFramework.Relational.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_32\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Authentication\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Authentication.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\System.Numerics.Vectors\4.1.1-beta-23516\lib\portable-net45+win8\System.Numerics.Vectors.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Logging.Console\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Logging.Console.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.Extensions.Logging.Debug\1.0.0-rc1-final\lib\net451\Microsoft.Extensions.Logging.Debug.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Diagnostics\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Diagnostics.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.StaticFiles\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.StaticFiles.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Authentication.Facebook\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Authentication.Facebook.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Authentication.OAuth\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Authentication.OAuth.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Authentication.Google\1.0.0-rc1-final\lib\net451\Microsoft.AspNet.Authentication.Google.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.VisualStudio.Web.BrowserLink.Loader\14.0.0-rc1-final\lib\dnx451\Microsoft.VisualStudio.Web.BrowserLink.Loader.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Users\bruce_000.dnx\packages\Microsoft.AspNet.Diagnostics.Entity\7.0.0-rc1-final\lib\net451\Microsoft.AspNet.Diagnostics.Entity.dll'. Cannot find or open the PDB file.
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\Microsoft\Web Tools\Page Inspector\dnx451\Microsoft.VisualStudio.Web.BrowserLink.Runtime.dll'. Cannot find or open the PDB file.
  Exception thrown: 'System.IO.FileNotFoundException' in Microsoft.VisualStudio.Web.BrowserLink.Runtime.dll
  'dnx.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\assembly\GAC_MSIL\Microsoft.VisualStudio.Debugger.Runtime\14.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.Debugger.Runtime.dll'. </p>
  
  <p>UPDATE 2:</p>
  
  <p>It seems that somewhere in Visual Studio there is a reference to a <code>beta 7</code> version of <code>Microsoft.VisualStudio.Web.BrowserLink.Runtime.dll</code>. The file referenced is in <code>C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\Microsoft\Web Tools\Page Inspector\dnx451</code>. Here is a screenshot:</p>
  
  <p><a href="https://i.stack.imgur.com/YrKux.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YrKux.png" alt="enter image description here"></a></p>
  
  <p>How do I go about removing this reference or updating it to RC1?</p>