diff --git a/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs b/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs
index 16bc7626..9fd3c176 100644
--- a/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs
+++ b/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs
@@ -72,5 +72,5 @@ using System.Security;
 // by using the '*' as shown below:
 [assembly: AssemblyVersion("4.5.0.0")]
 #if !PocketPC
-[assembly: AssemblyFileVersion("4.5.5.14908")]
+[assembly: AssemblyFileVersion("4.5.5.14913")]
 #endif
diff --git a/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs b/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs
index 99cdf3a9..c650990f 100644
--- a/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs
+++ b/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs
@@ -1976,7 +1976,7 @@ keyword such as type of business.""
         @"Unable to find a constructor to use for type Newtonsoft.Json.Tests.TestObjects.Event. A class should either have a default constructor, one constructor with arguments or a constructor marked with the JsonConstructor attribute. Path 'sublocation', line 1, position 15.",
         () =>
         {
-          Event e = JsonConvert.DeserializeObject<Event>(json);
+          JsonConvert.DeserializeObject<TestObjects.Event>(json);
         });
     }
 
@@ -6179,6 +6179,83 @@ Parameter name: value",
       return serializer.Deserialize(jsonReader, typeof(T)) as T;
     }
 #endif
+
+    [Test]
+    public void PropertyItemConverter()
+    {
+      Event e = new Event
+        {
+          EventName = "Blackadder III",
+          Venue = "Gryphon Theatre",
+          Performances = new List<DateTime>
+            {
+              DateTime.Parse("8 Tue May 2012, 6:30pm"),
+              DateTime.Parse("9 Wed May 2012, 6:30pm"),
+              DateTime.Parse("10 Thu May 2012, 8:00pm")
+            }
+        };
+
+      string json = JsonConvert.SerializeObject(e, Formatting.Indented);
+      //{
+      //  "EventName": "Blackadder III",
+      //  "Venue": "Gryphon Theatre",
+      //  "Performances": [
+      //    new Date(1336458600000),
+      //    new Date(1336545000000),
+      //    new Date(1336636800000)
+      //  ]
+      //}
+
+      Assert.AreEqual(@"{
+  ""EventName"": ""Blackadder III"",
+  ""Venue"": ""Gryphon Theatre"",
+  ""Performances"": [
+    new Date(
+      1336458600000
+    ),
+    new Date(
+      1336545000000
+    ),
+    new Date(
+      1336636800000
+    )
+  ]
+}", json);
+    }
+
+#if !(NET20 || NET35)
+    [Test]
+    public void SerializeDataContractSerializationAttributes()
+    {
+      DataContractSerializationAttributesClass dataContract = new DataContractSerializationAttributesClass
+        {
+          NoAttribute = "Value!",
+          IgnoreDataMemberAttribute = "Value!",
+          DataMemberAttribute = "Value!",
+          IgnoreDataMemberAndDataMemberAttribute = "Value!"
+        };
+
+      string json = JsonConvert.SerializeObject(dataContract, Formatting.Indented);
+      Assert.AreEqual(@"{
+  ""DataMemberAttribute"": ""Value!"",
+  ""IgnoreDataMemberAndDataMemberAttribute"": ""Value!""
+}", json);
+
+      PocoDataContractSerializationAttributesClass poco = new PocoDataContractSerializationAttributesClass
+      {
+        NoAttribute = "Value!",
+        IgnoreDataMemberAttribute = "Value!",
+        DataMemberAttribute = "Value!",
+        IgnoreDataMemberAndDataMemberAttribute = "Value!"
+      };
+
+      json = JsonConvert.SerializeObject(poco, Formatting.Indented);
+      Assert.AreEqual(@"{
+  ""NoAttribute"": ""Value!"",
+  ""DataMemberAttribute"": ""Value!""
+}", json);
+    }
+#endif
   }
 
 #if !(SILVERLIGHT || NETFX_CORE || PORTABLE)
@@ -6205,6 +6282,15 @@ Parameter name: value",
   }
 #endif
 
+  public class Event
+  {
+    public string EventName { get; set; }
+    public string Venue { get; set; }
+
+    [JsonProperty(ItemConverterType = typeof(JavaScriptDateTimeConverter))]
+    public IList<DateTime> Performances { get; set; }
+  }
+
   public class PropertyItemConverter
   {
     [JsonProperty(ItemConverterType = typeof(MetroStringConverter))]
@@ -6453,4 +6539,31 @@ Parameter name: value",
 #endif
     }
   }
+
+#if !(NET20 || NET35)
+  [DataContract]
+  public class DataContractSerializationAttributesClass
+  {
+    public string NoAttribute { get; set; }
+    [IgnoreDataMember]
+    public string IgnoreDataMemberAttribute { get; set; }
+    [DataMember]
+    public string DataMemberAttribute { get; set; }
+    [IgnoreDataMember]
+    [DataMember]
+    public string IgnoreDataMemberAndDataMemberAttribute { get; set; }
+  }
+
+  public class PocoDataContractSerializationAttributesClass
+  {
+    public string NoAttribute { get; set; }
+    [IgnoreDataMember]
+    public string IgnoreDataMemberAttribute { get; set; }
+    [DataMember]
+    public string DataMemberAttribute { get; set; }
+    [IgnoreDataMember]
+    [DataMember]
+    public string IgnoreDataMemberAndDataMemberAttribute { get; set; }
+  }
+#endif
 }
\ No newline at end of file
diff --git a/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs b/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
index d118eab7..2f760e90 100644
--- a/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
+++ b/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
@@ -90,7 +90,7 @@ using System.Security;
 // by using the '*' as shown below:
 [assembly: AssemblyVersion("4.5.0.0")]
 #if !PocketPC
-[assembly: AssemblyFileVersion("4.5.5.14908")]
+[assembly: AssemblyFileVersion("4.5.5.14913")]
 #endif
 
 [assembly: CLSCompliant(true)]
diff --git a/Src/Newtonsoft.Json/Serialization/DefaultContractResolver.cs b/Src/Newtonsoft.Json/Serialization/DefaultContractResolver.cs
index bb0db37a..10f2d2a2 100644
--- a/Src/Newtonsoft.Json/Serialization/DefaultContractResolver.cs
+++ b/Src/Newtonsoft.Json/Serialization/DefaultContractResolver.cs
@@ -946,16 +946,19 @@ namespace Newtonsoft.Json.Serialization
       property.PropertyName = ResolvePropertyName(mappedName);
       property.UnderlyingName = name;
 
+      bool hasMemberAttribute = false;
       if (propertyAttribute != null)
       {
         property._required = propertyAttribute._required;
         property.Order = propertyAttribute._order;
+        hasMemberAttribute = true;
       }
 #if !PocketPC && !NET20
       else if (dataMemberAttribute != null)
       {
         property._required = (dataMemberAttribute.IsRequired) ? Required.AllowNull : Required.Default;
         property.Order = (dataMemberAttribute.Order != -1) ? (int?) dataMemberAttribute.Order : null;
+        hasMemberAttribute = true;
       }
 #endif
 
@@ -968,19 +971,19 @@ namespace Newtonsoft.Json.Serialization
 
       if (memberSerialization != MemberSerialization.OptIn)
       {
-        // ignored if it has JsonIgnore or NonSerialized attributes
-        property.Ignored = hasJsonIgnoreAttribute;
+       bool hasIgnoreDataMemberAttribute = false;
+        
+#if !(NET20 || NET35)
+        hasIgnoreDataMemberAttribute = (JsonTypeReflector.GetAttribute<IgnoreDataMemberAttribute>(attributeProvider) != null);
+#endif
+
+        // ignored if it has JsonIgnore or NonSerialized or IgnoreDataMember attributes
+        property.Ignored = (hasJsonIgnoreAttribute || hasIgnoreDataMemberAttribute);
       }
       else
       {
         // ignored if it has JsonIgnore/NonSerialized or does not have DataMember or JsonProperty attributes
-        property.Ignored =
-          hasJsonIgnoreAttribute
-          || (propertyAttribute == null
-#if !PocketPC && !NET20
-              && dataMemberAttribute == null
-#endif
-             );
+        property.Ignored = (hasJsonIgnoreAttribute || !hasMemberAttribute);
       }
 
       // resolve converter for property
diff --git a/Src/Newtonsoft.Json/Utilities/ConvertUtils.cs b/Src/Newtonsoft.Json/Utilities/ConvertUtils.cs
index 9bf50df2..59e6c836 100644
--- a/Src/Newtonsoft.Json/Utilities/ConvertUtils.cs
+++ b/Src/Newtonsoft.Json/Utilities/ConvertUtils.cs
@@ -41,6 +41,7 @@ using IConvertible = Newtonsoft.Json.Utilities.Convertible;
 
 namespace Newtonsoft.Json.Utilities
 {
+#if NETFX_CORE
   internal class Convertible
   {
     private object _underlyingValue;
@@ -120,6 +121,7 @@ namespace Newtonsoft.Json.Utilities
       return Convert.ToUInt64(_underlyingValue, provider);
     }
   }
+#endif
 
   internal static class ConvertUtils
   {