after update to rc1 my project automatically close without show any error

Hi people, I just updated my project today (it was in beta8) and now when a press run it open the browser and stop run in a instant, I dont have any error in the console so I dont even know where to start,  it dont even start the Startup so the error must be in the first stage , any idea of what can be wrong?

my Json file:

{"userSecretsId": "aspnet5-AspNetBlog-20150608025315","webroot": "wwwroot","version": "1.0.0-*","dependencies": {"AjaxControlToolkit": "15.1.4","EntityFramework.MicrosoftSqlServer":"7.0.0-rc1-final","Microsoft.AspNet.Diagnostics": "1.0.0-rc1-final","Microsoft.AspNet.Identity": "3.0.0-rc1-final","Microsoft.AspNet.Identity.EntityFramework": "3.0.0-rc1-final","Microsoft.AspNet.IISPlatformHandler": "1.0.0-rc1-final","Microsoft.AspNet.Http.Abstractions": "1.0.0-rc1-final","Microsoft.AspNet.Mvc": "6.0.0-rc1-final","Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-rc1-final","Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final","Microsoft.AspNet.Server.WebListener": "1.0.0-rc1-final","Microsoft.AspNet.StaticFiles": "1.0.0-rc1-final","Microsoft.Extensions.Configuration.Json": "1.0.0-rc1-final","Microsoft.Extensions.Configuration.UserSecrets": "1.0.0-rc1-final",


    
  },

  "commands": {"web": "Microsoft.AspNet.Server.Kestrel"
  },"frameworks": {"dnx451": {"frameworkAssemblies": {"System.Web": "4.0.0.0","System.Web.Abstractions": "4.0.0.0"
      },"dependencies": {"System.IO.Abstractions": "2.0.0.124"
      }
    }
  },"publishExclude": ["node_modules","bower_components","**.xproj","**.user","**.vspscc","**.dev.**"
  ],"exclude": ["wwwroot","node_modules","bower_components"
  ]
}

my previous Json:

{"userSecretsId": "aspnet5-AspNetBlog-20150608025315","webroot": "../../../wwwroot","version": "1.0.0-*","dependencies": {"Microsoft.AspNet.Server.WebListener": "1.0.0-beta8","Microsoft.AspNet.StaticFiles": "1.0.0-beta8","Microsoft.AspNet.Mvc": "6.0.0-beta8","Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-beta8","EntityFramework.SqlServer": "7.0.0-beta8","Microsoft.AspNet.IISPlatformHandler": "1.0.0-beta8","Microsoft.AspNet.Server.IIS": "1.0.0-beta7","Microsoft.AspNet.Diagnostics": "1.0.0-beta8","Microsoft.Framework.Configuration": "1.0.0-beta8","Microsoft.Framework.Configuration.UserSecrets": "1.0.0-beta8","Microsoft.Framework.Configuration.Json": "1.0.0-beta8","Microsoft.AspNet.Identity.EntityFramework": "3.0.0-beta8","Microsoft.AspNet.Server.Kestrel": "1.0.0-beta8","Microsoft.Framework.Runtime.Interfaces": "1.0.0-beta4","bootstrap": "3.3.6","Microsoft.AspNet.Identity": "3.0.0-beta8","AjaxControlToolkit": "15.1.4"
  },"commands": {"web": "Microsoft.AspNet.Server.Kestrel"
  },"frameworks": {"dnx451": {"frameworkAssemblies": {"System.Web": "4.0.0.0","System.Web.Abstractions": "4.0.0.0"
      },"dependencies": {"System.IO.Abstractions": "2.0.0.124"
      }
    }
  },"publishExclude": ["node_modules","bower_components","**.xproj","**.user","**.vspscc","**.dev.**"
  ],"exclude": ["wwwroot","node_modules","bower_components"
  ]
}

and my web config file:

<configuration><system.webServer><httpErrors errorMode="Detailed" /><asp scriptErrorSentToBrowser="true"/><handlers><add
        name="httpPlatformHandler"
        path="*"
        verb="*"
        modules="httpPlatformHandler"
        resourceType="Unspecified"/></handlers><httpPlatform
      processPath="%DNX_PATH%"
      arguments="%DNX_ARGS%"
      stdoutLogEnabled="false"
      startupTimeLimit="3600"/></system.webServer></configuration>