System.InvalidCastException: Specified cast is not valid

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System.InvalidCastException: Specified cast is not valid.
   at lambda_method(Closure , Object , Object[] )
   at NConsoler.Consolery.InvokeMethod(MethodInfo method)
   at NConsoler.Consolery.RunAction()
   at NConsoler.Consolery.Run(Type targetType, String[] args, IMessenger messenger, Notation notationType)
   at NConsoler.Consolery.Run(Type targetType, String[] args)
   at MyApplication.Program.Main(String[] args) in C:\MyApplication.Test\Program.cs:line 20

nconsoler 2.0
Windows 7 Ultimate 64-bit SP1
Visual Studio 2010 Premium SP1
.net 4 c# console application

namespace MyApplication.Test
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Consolery.Run(typeof(Program), args);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }
        }

        [Action]
        public static void DoWork(
            [Required(Description="description1")]
            string parameter1,
            [Required(Description="description2")]
            string parameter2,
            [Required(Description="description3")]
            string parameter3,
            [Optional("01-01-2009", Description = "description4")]
            DateTime parameter4,
            [Optional(10, Description = "description5")]
            int parameter5,
            [Optional(@"c:\temp", Description = "description6")]
            string parameter6)
        {
        }
    }
}

MyApplication.Test.exe param1 param2.param2 param3 /param6:"C:\Working"

If I remove the DateTime parameter, it works without issues.

I even tried "1-1-2009" but I get the same exception.

Any ideas?

Thank you.

Original issue reported on code.google.com by rami.abughazaleh@gmail.com on 14 Jan 2012 at 5:04