diff --git a/Assets/Cryville/Common/Pdt/PdtInterpreter.cs b/Assets/Cryville/Common/Pdt/PdtInterpreter.cs
index 52720e3..b7dbeb2 100644
--- a/Assets/Cryville/Common/Pdt/PdtInterpreter.cs
+++ b/Assets/Cryville/Common/Pdt/PdtInterpreter.cs
@@ -167,7 +167,7 @@ namespace Cryville.Common.Pdt {
 		}
 		object InterpretObject(Type type) {
 			var result = ReflectionHelper.InvokeEmptyConstructor(type);
-			bool dictflag = ReflectionHelper.IsGenericDictionary(type);
+			bool dictflag = typeof(IDictionary).IsAssignableFrom(type);
 			while (true) {
 				try { ws(); }
 				catch (IndexOutOfRangeException) { return result; }
@@ -183,19 +183,20 @@ namespace Cryville.Common.Pdt {
 							((IDictionary)result).Add(key, value);
 						}
 						else {
-							MemberInfo prop;
-							bool flag = ReflectionHelper.TryFindMemberWithAttribute<ElementListAttribute>(type, out prop);
-							if (!flag && pkey is string) prop = ReflectionHelper.GetMember(type, (string)pkey);
+							MemberInfo prop = null;
+							bool flag = false;
+							if (pkey is string) prop = ReflectionHelper.GetMember(type, (string)pkey);
+							if (prop == null) flag = ReflectionHelper.TryFindMemberWithAttribute<ElementListAttribute>(type, out prop);
+							if (prop == null) throw new MissingMemberException(string.Format("The property \"{0}\" is not found", pkey));
 							Type ptype = ReflectionHelper.GetMemberType(prop);
-							if (ReflectionHelper.IsGenericDictionary(ptype)) {
+							if (flag) {
+								if (!typeof(IDictionary).IsAssignableFrom(ptype))
+									throw new InvalidOperationException("Internal error: Element list is not a dictionary");
 								var ktype = ptype.GetGenericArguments()[0];
 								var vtype = ptype.GetGenericArguments()[1];
-								if (flag) {
-									object key = _binder.ChangeType(pkey, ktype, null);
-									object value = InterpretObject(vtype);
-									((IDictionary)ReflectionHelper.GetValue(prop, result)).Add(key, value);
-								}
-								else ReflectionHelper.SetValue(prop, result, InterpretObject(ptype));
+								object key = _binder.ChangeType(pkey, ktype, null);
+								object value = InterpretObject(vtype);
+								((IDictionary)ReflectionHelper.GetValue(prop, result)).Add(key, value);
 							}
 							else ReflectionHelper.SetValue(prop, result, InterpretObject(ptype));
 						}
@@ -211,21 +212,23 @@ namespace Cryville.Common.Pdt {
 							((IDictionary)result).Add(key, value);
 						}
 						else {
-							MemberInfo prop;
-							bool flag = ReflectionHelper.TryFindMemberWithAttribute<PropertyListAttribute>(type, out prop);
-							if (!flag && pkey is string) prop = ReflectionHelper.GetMember(type, (string)pkey);
+							MemberInfo prop = null;
+							bool flag = false;
+							if (pkey is string) prop = ReflectionHelper.GetMember(type, (string)pkey);
+							if (prop == null) flag = ReflectionHelper.TryFindMemberWithAttribute<PropertyListAttribute>(type, out prop);
+							if (prop == null) throw new MissingMemberException(string.Format("The property \"{0}\" is not found", pkey));
 							var ptype = ReflectionHelper.GetMemberType(prop);
-							if (!typeof(IDictionary).IsAssignableFrom(ptype)) {
-								object value = _binder.ChangeType(exp, ptype, null);
-								ReflectionHelper.SetValue(prop, result, value, _binder);
-							}
-							else {
+							if (flag) {
 								var ktype = ptype.GetGenericArguments()[0];
 								var vtype = ptype.GetGenericArguments()[1];
 								object key = _binder.ChangeType(pkey, ktype, null);
 								object value = _binder.ChangeType(exp, vtype, null);
 								((IDictionary)ReflectionHelper.GetValue(prop, result)).Add(key, value);
 							}
+							else {
+								object value = _binder.ChangeType(exp, ptype, null);
+								ReflectionHelper.SetValue(prop, result, value, _binder);
+							}
 						}
 						break;
 					case '}':