Hello there,
Just in case the user is still interested to understand what exception he receives.
You can either disable the Exception Swallowing and your application will receive the TwitterException.
ExceptionHandler.SwallowWebExceptions = false;
Or you can catch all exceptions with the following event.
ExceptionHandler.WebExceptionReceived += (sender, args) =>
{
// args.value contains all the information you want
Console.WriteLine(args.Value);
};
Hope this help 
Cheers,
Linvi