diff --git a/Src/Newtonsoft.Json.Tests/JsonTextWriterTest.cs b/Src/Newtonsoft.Json.Tests/JsonTextWriterTest.cs
index 18aa1862..b0cf0f28 100644
--- a/Src/Newtonsoft.Json.Tests/JsonTextWriterTest.cs
+++ b/Src/Newtonsoft.Json.Tests/JsonTextWriterTest.cs
@@ -64,6 +64,7 @@ namespace Newtonsoft.Json.Tests
       Assert.IsTrue(ms.CanRead);
     }
 
+#if !(PORTABLE || NETFX_CORE)
     [Test]
     public void WriteIConvertable()
     {
@@ -73,6 +74,7 @@ namespace Newtonsoft.Json.Tests
 
       Assert.AreEqual("1", sw.ToString());
     }
+#endif
     
     [Test]
     public void ValueFormatting()
@@ -1272,6 +1274,7 @@ _____'propertyName': NaN
     }
   }
 
+#if !(PORTABLE || NETFX_CORE)
   public struct ConvertibleInt : IConvertible
   {
     private readonly int _value;
@@ -1369,4 +1372,5 @@ _____'propertyName': NaN
       throw new NotImplementedException();
     }
   }
+#endif
 }
\ No newline at end of file
diff --git a/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs b/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs
index 55289ad3..d07ad717 100644
--- a/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs
+++ b/Src/Newtonsoft.Json.Tests/Properties/AssemblyInfo.cs
@@ -75,4 +75,4 @@ using System.Security;
 // You can specify all the values or you can default the Revision and Build Numbers 
 // by using the '*' as shown below:
 [assembly: AssemblyVersion("4.5.0.0")]
-[assembly: AssemblyFileVersion("5.0.1.15931")]
+[assembly: AssemblyFileVersion("5.0.1.16001")]
diff --git a/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs b/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs
index d96ac16e..e224a18d 100644
--- a/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs
+++ b/Src/Newtonsoft.Json.Tests/Serialization/JsonSerializerTest.cs
@@ -5762,6 +5762,7 @@ To fix this error either change the environment to be fully trusted, change the
         });
     }
 
+#if !(PORTABLE || NETFX_CORE)
     public class ConvertableIntTestClass
     {
       public ConvertibleInt Integer { get; set; }
@@ -5801,6 +5802,7 @@ To fix this error either change the environment to be fully trusted, change the
         "Error converting value 1 to type 'Newtonsoft.Json.Tests.ConvertibleInt'. Path 'Integer', line 2, position 15.",
         () => JsonConvert.DeserializeObject<ConvertableIntTestClass>(json));
     }
+#endif
 
     [Test]
     public void SerializeNullableWidgetStruct()
diff --git a/Src/Newtonsoft.Json/JsonConvert.cs b/Src/Newtonsoft.Json/JsonConvert.cs
index 852b1c11..035d68dd 100644
--- a/Src/Newtonsoft.Json/JsonConvert.cs
+++ b/Src/Newtonsoft.Json/JsonConvert.cs
@@ -687,11 +687,13 @@ namespace Newtonsoft.Json
       if (typeCode != PrimitiveTypeCode.Empty && typeCode != PrimitiveTypeCode.Object)
         return true;
 
+#if !(PORTABLE || NETFX_CORE)
       if (typeof(IConvertible).IsAssignableFrom(t)
         || (ReflectionUtils.IsNullableType(t) && typeof(IConvertible).IsAssignableFrom(Nullable.GetUnderlyingType(t))))
       {
         return !typeof(JToken).IsAssignableFrom(t);
       }
+#endif
 
       return false;
     }
diff --git a/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs b/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
index 52274148..6358d699 100644
--- a/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
+++ b/Src/Newtonsoft.Json/Properties/AssemblyInfo.cs
@@ -90,6 +90,6 @@ using System.Security;
 // You can specify all the values or you can default the Revision and Build Numbers 
 // by using the '*' as shown below:
 [assembly: AssemblyVersion("4.5.0.0")]
-[assembly: AssemblyFileVersion("5.0.1.15931")]
+[assembly: AssemblyFileVersion("5.0.1.16001")]
 
 [assembly: CLSCompliant(true)]
diff --git a/Src/Newtonsoft.Json/Schema/JsonSchemaGenerator.cs b/Src/Newtonsoft.Json/Schema/JsonSchemaGenerator.cs
index 7c9da1b7..6f552ce7 100644
--- a/Src/Newtonsoft.Json/Schema/JsonSchemaGenerator.cs
+++ b/Src/Newtonsoft.Json/Schema/JsonSchemaGenerator.cs
@@ -443,7 +443,9 @@ namespace Newtonsoft.Json.Schema
         case PrimitiveTypeCode.UInt32:
         case PrimitiveTypeCode.Int64:
         case PrimitiveTypeCode.UInt64:
+#if !(PORTABLE || NET35 || NET20 || WINDOWS_PHONE || SILVERLIGHT)
         case PrimitiveTypeCode.BigInteger:
+#endif
           return schemaType | JsonSchemaType.Integer;
         case PrimitiveTypeCode.Single:
         case PrimitiveTypeCode.Double:
@@ -451,7 +453,9 @@ namespace Newtonsoft.Json.Schema
           return schemaType | JsonSchemaType.Float;
         // convert to string?
         case PrimitiveTypeCode.DateTime:
+#if !NET20
         case PrimitiveTypeCode.DateTimeOffset:
+#endif
           return schemaType | JsonSchemaType.String;
         case PrimitiveTypeCode.String:
         case PrimitiveTypeCode.Uri:
diff --git a/Src/Newtonsoft.Json/Serialization/JsonPrimitiveContract.cs b/Src/Newtonsoft.Json/Serialization/JsonPrimitiveContract.cs
index 6fccf30e..07222762 100644
--- a/Src/Newtonsoft.Json/Serialization/JsonPrimitiveContract.cs
+++ b/Src/Newtonsoft.Json/Serialization/JsonPrimitiveContract.cs
@@ -25,7 +25,6 @@
 
 using System;
 #if !(PORTABLE || NET35 || NET20 || WINDOWS_PHONE || SILVERLIGHT)
-using System.Globalization;
 using System.Numerics;
 #endif
 using Newtonsoft.Json.Utilities;
diff --git a/Src/Newtonsoft.Json/Utilities/ReflectionUtils.cs b/Src/Newtonsoft.Json/Utilities/ReflectionUtils.cs
index 8893a3de..89bc330c 100644
--- a/Src/Newtonsoft.Json/Utilities/ReflectionUtils.cs
+++ b/Src/Newtonsoft.Json/Utilities/ReflectionUtils.cs
@@ -25,7 +25,9 @@
 
 using System;
 using System.Collections.Generic;
+#if !(PORTABLE || NET35 || NET20 || WINDOWS_PHONE || SILVERLIGHT)
 using System.Numerics;
+#endif
 using System.Reflection;
 using System.Collections;
 using System.Globalization;
@@ -981,12 +983,16 @@ namespace Newtonsoft.Json.Utilities
           return 0m;
         case PrimitiveTypeCode.DateTime:
           return new DateTime();
+#if !(PORTABLE || NET35 || NET20 || WINDOWS_PHONE || SILVERLIGHT)
         case PrimitiveTypeCode.BigInteger:
           return new BigInteger();
+#endif
         case PrimitiveTypeCode.Guid:
           return new Guid();
+#if !NET20
         case PrimitiveTypeCode.DateTimeOffset:
           return new DateTimeOffset();
+#endif
       }
 
       if (IsNullable(type))