Newtonsoft version mismatch

[mklaber]

I had to downgrade Newtonsoft to v6.0.6 because Mvc 6.0.0-rc1 is using it. Issue is also mentioned here: http://stackoverflow.com/questions/35772387/jsonserializersettings-and-asp-net-core

System.MissingMethodException: Method not found: 'Newtonsoft.Json.JsonSerializerSettings Microsoft.AspNet.Mvc.MvcJsonOptions.get_SerializerSettings()'.
   at BoilerplatMvc6.Startup.<>c.<ConfigureFormatters>b__21_0(MvcJsonOptions x)
   at Microsoft.Extensions.OptionsModel.ConfigureOptions`1.Configure(TOptions options)
   at Microsoft.Extensions.OptionsModel.OptionsManager`1.<>c.<get_Value>b__4_0(TOptions options, IConfigureOptions`1 setup)
   at System.Linq.Enumerable.Aggregate[TSource,TAccumulate](IEnumerable`1 source, TAccumulate seed, Func`3 func)
   at Microsoft.Extensions.OptionsModel.OptionsManager`1.get_Value()
   at Microsoft.AspNet.Mvc.Formatters.Json.Internal.MvcJsonMvcOptionsSetup.<>c__DisplayClass0_0.<.ctor>b__0(MvcOptions _)
   at Microsoft.Extensions.OptionsModel.ConfigureOptions`1.Configure(TOptions options)
   at Microsoft.Extensions.OptionsModel.OptionsManager`1.<>c.<get_Value>b__4_0(TOptions options, IConfigureOptions`1 setup)
   at System.Linq.Enumerable.Aggregate[TSource,TAccumulate](IEnumerable`1 source, TAccumulate seed, Func`3 func)
   at Microsoft.Extensions.OptionsModel.OptionsManager`1.get_Value()
   at Microsoft.AspNet.Mvc.ApplicationModels.DefaultApplicationModelProvider..ctor(IOptions`1 mvcOptionsAccessor)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ConstructorCallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.TransientCallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ClosedIEnumerableService.CallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.TransientCallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ConstructorCallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.TransientCallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ClosedIEnumerableService.CallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.TransientCallSite.Invoke(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.<>c__DisplayClass12_0.<RealizeService>b__0(ServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderExtensions.GetRequiredService[T](IServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderExtensions.GetServices[T](IServiceProvider provider)
   at Microsoft.AspNet.Mvc.Infrastructure.DefaultActionDescriptorsCollectionProvider.GetCollection()
   at Microsoft.AspNet.Mvc.Infrastructure.DefaultActionDescriptorsCollectionProvider.get_ActionDescriptors()
   at Microsoft.AspNet.Mvc.Routing.AttributeRoute.GetInnerRoute()
   at Microsoft.AspNet.Mvc.Routing.AttributeRoute.RouteAsync(RouteContext context)
   at Microsoft.AspNet.Routing.RouteCollection.<RouteAsync>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at Microsoft.AspNet.Builder.RouterMiddleware.<Invoke>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at Microsoft.AspNet.Diagnostics.DeveloperExceptionPageMiddleware.<Invoke>d__7.MoveNext()

[RehanSaeed]

I've just been taking a look at this. I'm not seeing a problem with this code:

mvcBuilder.AddJsonOptions(
                x => x.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver());

Is there something else which may be causing problems?

[RehanSaeed]

Feel free to re-open this issue if you are still having problems.