Index: Src/Languages/IronPython/IronPython/Runtime/Binding/ContextArgBuilder.cs
===================================================================
--- Src/Languages/IronPython/IronPython/Runtime/Binding/ContextArgBuilder.cs	(revision 22765)
+++ Src/Languages/IronPython/IronPython/Runtime/Binding/ContextArgBuilder.cs	(working copy)
@@ -27,7 +27,7 @@
     /// ArgBuilder which provides the CodeContext parameter to a method.
     /// </summary>
     public sealed class ContextArgBuilder : ArgBuilder {
-        private static Func<object[], object> _readFunc = (Func<object[], object>)Delegate.CreateDelegate(typeof(Func<object[], object>), 0, typeof(ArgBuilder).GetMethod("ArgumentRead"));
+        private static Func<object[], object> _readFunc = (Func<object[], object>)Delegate.CreateDelegate(typeof(Func<object[], object>), new object[] { 0 }, typeof(ArgBuilder).GetMethod("ArgumentRead"));
         public ContextArgBuilder(ParameterInfo info) 
             : base(info){
         }
Index: Src/Runtime/Microsoft.Scripting/Actions/Calls/ArgBuilder.cs
===================================================================
--- Src/Runtime/Microsoft.Scripting/Actions/Calls/ArgBuilder.cs	(revision 22765)
+++ Src/Runtime/Microsoft.Scripting/Actions/Calls/ArgBuilder.cs	(working copy)
@@ -66,8 +66,8 @@
         /// 
         /// This function is referenced via reflection and if renamed needs CALLERS UPDATED.
         /// </summary>
-        public static object ArgumentRead(object value, object[] args) {
-            return args[(int)value];
+        public static object ArgumentRead(object[] value, object[] args) {
+            return args[(int)(value[0])];
         }
 
         /// <summary>
Index: Src/Runtime/Microsoft.Scripting/Actions/Calls/SimpleArgBuilder.cs
===================================================================
--- Src/Runtime/Microsoft.Scripting/Actions/Calls/SimpleArgBuilder.cs	(revision 22765)
+++ Src/Runtime/Microsoft.Scripting/Actions/Calls/SimpleArgBuilder.cs	(working copy)
@@ -109,7 +109,7 @@
 
             return (Func<object[], object>)Delegate.CreateDelegate(
                 typeof(Func<object[], object>), 
-                _index + 1, 
+                new object[] { _index + 1 }, 
                 typeof(ArgBuilder).GetMethod("ArgumentRead"));
         }