New Post: Call known method by name

Per this thread here:
https://clearscript.codeplex.com/discussions/467402

I should be able to do

ScriptEngine.Script["MyMethod"](arg1, arg2);

But I get exception:

Cannot apply indexing with [] to an expression of type 'System.Dynamic.DynamicObject'

Per this thread here:
https://clearscript.codeplex.com/discussions/537917

the extension method blows up in the same way.

var del = (Delegate)host.func<object>(args.Length, engine.Script[name]);

engine.Script[name] is not allowed.

Am i missing something basic??