"Unable to resolve type: System.Threading.Tasks.Task" exception in WebApi application

I’m trying to resolve my own OAuthAuthorizationServerProvider for injecting it into OAuthOptions in my application. But I’m getting a strange exception on app start. I’ve tried many cases, and it works if I use RegisterInstance method.

Server Error in '/' Application.
Unable to resolve type: System.Threading.Tasks.Task, service name:
[InvalidOperationException: Unable to resolve type: System.Threading.Tasks.Task, service name: ]
   LightInject.ServiceContainer.CreateDelegate(Type serviceType, String serviceName, Boolean throwError) in c:\GitHub\LightInject\NuGet\Build\Net45\LightInject\LightInject.cs:3999
   LightInject.ServiceContainer.CreateDefaultDelegate(Type serviceType, Boolean throwError) in c:\GitHub\LightInject\NuGet\Build\Net45\LightInject\LightInject.cs:3970
   LightInject.ServiceContainer.GetInstance(Type serviceType, Object[] arguments) in c:\GitHub\LightInject\NuGet\Build\Net45\LightInject\LightInject.cs:2675
   LightInject.ServiceContainer.GetInstance(T value) in c:\GitHub\LightInject\NuGet\Build\Net45\LightInject\LightInject.cs:2736
Microsoft.Owin.Security.OAuth.OAuthAuthorizationServerProvider.MatchEndpoint(OAuthMatchEndpointContext context) +10
   Microsoft.Owin.Security.OAuth.<InvokeAsync>d__0.MoveNext() +421
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +92
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   Microsoft.Owin.Security.Infrastructure.<Invoke>d__0.MoveNext() +383

Steps to reproduce (easy):

1. Create a new standard ASP.Net 4.5.2 Template “Web API” solution
2. Add package “LightInject.WebApi 1.0.0.4”
3. Open “ApplicationOAuthProvider.cs” and remove all constructors
4. Open “Startup.Auth.cs”, change creation of OAuthOptions to the following and start the application:

var container = new ServiceContainer();
container.Register<ApplicationOAuthProvider, ApplicationOAuthProvider>();

OAuthOptions = new OAuthAuthorizationServerOptions
{
    TokenEndpointPath = new PathString("/Token"),
    Provider = container.GetInstance<ApplicationOAuthProvider>(), // this is the modified line
    AuthorizeEndpointPath = new PathString("/api/Account/ExternalLogin"),
    AccessTokenExpireTimeSpan = TimeSpan.FromDays(14),
    AllowInsecureHttp = true
};

<package id="LightInject" version="3.0.2.7" targetFramework="net452" />
<package id="LightInject.WebApi" version="1.0.0.4" targetFramework="net452" />
Project target: .Net Framework 4.5.2 "Any CPU"
Windows 10 x64, VS 2015

[seesharper]

You can also disable property injection at the container level

containerOptions.EnablePropertyInjection = false 

[the-spyke]

@kbiel Thanks for clarification!