问题
I have a SignalR Hub (called SignalRHub) on which I have enabled tracing to diagnose intermittant delivery failures. When I install the hub into IIS 7.5 (Windows 3008 R2) the tracing outputs the following warning
SignalR.ReflectedHubDescriptorProvider Warning: 0 : Some of the classes from assembly "Microsoft.AspNet.SignalR.Owin, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" could Not be loaded when searching for Hubs. [C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\SignalRHub\4ccc0432\cdbbac63\assembly\dl3\8421904d\0082ca11_2b40d001\Microsoft.AspNet.SignalR.Owin.dll]
Original exception type: ReflectionTypeLoadException
Original exception message: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
Has anyone seen this before and if so, is it an issue? I believe all the libraries are installed with the hub.
Any help would be most gratefully received.
来源：https://stackoverflow.com/questions/28436428/signalr-warning-on-startup