diff --git a/Upsilon/BaseTypes/ScriptFunction/ScriptMethodInfoFunction.cs b/Upsilon/BaseTypes/ScriptFunction/ScriptMethodInfoFunction.cs
index 06f265f..dc8039a 100644
--- a/Upsilon/BaseTypes/ScriptFunction/ScriptMethodInfoFunction.cs
+++ b/Upsilon/BaseTypes/ScriptFunction/ScriptMethodInfoFunction.cs
@@ -62,18 +62,20 @@ namespace Upsilon.BaseTypes.ScriptFunction
                 }
             }
 
+            object result;
             try
             {
-                var result = method.Invoke(_object, objects.ToArray());
-                if (_directTypeManipulation)
-                    return (ScriptType)result;
-                return result.ToScriptType();
+                result = method.Invoke(_object, objects.ToArray());
             }
             catch (TargetInvocationException e)
             {
                 if (e.InnerException != null) throw e.InnerException;
                 throw;
             }
+            if (_directTypeManipulation)
+                return (ScriptType)result;
+            return result.ToScriptType();
+
         }
     }
 }
\ No newline at end of file
diff --git a/Upsilon/BaseTypes/UserData/UserDataMethod.cs b/Upsilon/BaseTypes/UserData/UserDataMethod.cs
index 2d93c02..fcb864a 100644
--- a/Upsilon/BaseTypes/UserData/UserDataMethod.cs
+++ b/Upsilon/BaseTypes/UserData/UserDataMethod.cs
@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
+using Upsilon.Evaluator;
 
 namespace Upsilon.BaseTypes.UserData
 {
@@ -11,7 +12,17 @@ namespace Upsilon.BaseTypes.UserData
             public UserDataMethodPart(MethodInfo method)
             {
                 Method = method;
-                Parameters = method.GetParameters().Select(x => new UserDataMethodParameter(x)).ToArray();
+                var pars = method.GetParameters();
+                var ls = new List<UserDataMethodParameter>();
+                foreach (var parameter in pars)
+                {
+                    if (parameter.ParameterType == typeof(Script))
+                        continue;
+                    if (parameter.ParameterType == typeof(EvaluationScope))
+                        continue;
+                    ls.Add(new UserDataMethodParameter(parameter));
+                }
+                Parameters = ls.ToArray();
             }
 
             public MethodInfo Method { get; }
diff --git a/Upsilon/Binder/BoundBinaryOperator.cs b/Upsilon/Binder/BoundBinaryOperator.cs
index f83cf75..5fb1574 100644
--- a/Upsilon/Binder/BoundBinaryOperator.cs
+++ b/Upsilon/Binder/BoundBinaryOperator.cs
@@ -13,7 +13,9 @@ namespace Upsilon.Binder
             GreaterEquals,
             Greater,
             LessEquals,
-            Less
+            Less,
+            And,
+            Or
         }
 
         private Type LeftType { get; }
@@ -59,6 +61,10 @@ namespace Upsilon.Binder
             new BoundBinaryOperator(OperatorKind.Equality, Type.Boolean),
             new BoundBinaryOperator(OperatorKind.Inequality, Type.Boolean),
 
+            // Boolean chaining
+            new BoundBinaryOperator(OperatorKind.And, Type.Boolean),
+            new BoundBinaryOperator(OperatorKind.Or, Type.Boolean),
+
             // String operators
             new BoundBinaryOperator(OperatorKind.Addition, Type.String, Type.String, Type.String),
             new BoundBinaryOperator(OperatorKind.Addition, Type.String, Type.Number, Type.String),
@@ -114,6 +120,12 @@ namespace Upsilon.Binder
                 case SyntaxKind.GreaterEquals:
                     kind = OperatorKind.GreaterEquals;
                     break;
+                case SyntaxKind.AndKeyword:
+                    kind = OperatorKind.And;
+                    break;
+                case SyntaxKind.OrKeyword:
+                    kind = OperatorKind.Or;
+                    break;
                 default:
                     throw new Exception("Unknown binary operator token: " + operatorToken);
             }
diff --git a/Upsilon/Binder/VariableSymbols/InternalFunctionVariableSymbol.cs b/Upsilon/Binder/VariableSymbols/InternalFunctionVariableSymbol.cs
index fac4d04..fbebcb9 100644
--- a/Upsilon/Binder/VariableSymbols/InternalFunctionVariableSymbol.cs
+++ b/Upsilon/Binder/VariableSymbols/InternalFunctionVariableSymbol.cs
@@ -50,7 +50,7 @@ namespace Upsilon.Binder.VariableSymbols
                 if (!functionParameter.ValidTypes.HasFlag(callingParameter.Type))
                 {
                     return (false,
-                        $"Unexpected variable passed to internal function at position {i + 1}. " +
+                        $"Unexpected variable passed to internal function at variable {i + 1}. " +
                         $"Expected one of the following: {functionParameter.ValidTypes.ToString()}, got: '{callingParameter.Type}'",
                         callingParameter);
                 }
diff --git a/Upsilon/Evaluator/Evaluator.cs b/Upsilon/Evaluator/Evaluator.cs
index e8da4c4..e11defe 100644
--- a/Upsilon/Evaluator/Evaluator.cs
+++ b/Upsilon/Evaluator/Evaluator.cs
@@ -359,6 +359,10 @@ namespace Upsilon.Evaluator
                     ThrowException($"Can't find operator for types '{left.Type}' and '{right.Type}'", e.Span);
                     return new ScriptNull();
 
+                case BoundBinaryOperator.OperatorKind.And:
+                    return new ScriptBoolean((ScriptBoolean) left && (ScriptBoolean) right);
+                case BoundBinaryOperator.OperatorKind.Or:
+                    return new ScriptBoolean((ScriptBoolean) left || (ScriptBoolean) right);
                 default:
                     throw new Exception("Invalid Binary Operator: " + e.Operator);
             }
diff --git a/Upsilon/Executor.cs b/Upsilon/Executor.cs
index 325bfe1..f778d76 100644
--- a/Upsilon/Executor.cs
+++ b/Upsilon/Executor.cs
@@ -53,7 +53,7 @@ namespace Upsilon
         public static Script ContinueWith(Script script, BoundScript bound)
         {
             var s = Script.ContinueWith(script, bound);
-            s.Parse();
+            s.Evaluate();
             return s;
         }
 
diff --git a/Upsilon/StandardLibraries/BasicFunctions.cs b/Upsilon/StandardLibraries/BasicFunctions.cs
index cb7e7d1..960dd2e 100644
--- a/Upsilon/StandardLibraries/BasicFunctions.cs
+++ b/Upsilon/StandardLibraries/BasicFunctions.cs
@@ -45,8 +45,9 @@ namespace Upsilon.StandardLibraries
 
         [StandardLibraryScriptFunction("require", "Loads a module from the module path, using the given script loader.",
             true)]
-        public ScriptType Require(Script script, string file)
+        public ScriptType Require(Script script, ScriptString fileName)
         {
+            var file = fileName.Value;
             var loader = script.Options.ScriptLoader;
             if (loader != null)
             {