System.IndexOutOfRangeException when serializing dictionary

[furlongmt]

Hi,

I am using Ceras (4.1.7) and running into the following exception when serializing a dictionary. It only seems to happen intermittently (we're seeing this issue in production), but I can try to track down a particular input that causes this issue. Here is the stack trace we're getting:

   System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at Ceras.Helpers.TypeDictionary`1.AddKey(Type key, Int32 bucketIndex) in C:\projects\ceras\src\Ceras\Helpers\TypeDictionary.cs:line 256
   at Ceras.Formatters.TypeFormatter.Serialize(Byte[]& buffer, Int32& offset, Type type) in C:\projects\ceras\src\Ceras\Formatters\TypeFormatter.cs:line 52
   at Ceras.Formatters.TypeFormatter.Serialize(Byte[]& buffer, Int32& offset, Type type) in C:\projects\ceras\src\Ceras\Formatters\TypeFormatter.cs:line 52
   at Ceras.Formatters.TypeFormatter.Serialize(Byte[]& buffer, Int32& offset, Type type) in C:\projects\ceras\src\Ceras\Formatters\TypeFormatter.cs:line 52
   at Ceras.Formatters.ReferenceFormatter`1.Serialize(Byte[]& buffer, Int32& offset, T value) in C:\projects\ceras\src\Ceras\Formatters\ReferenceFormatter.cs:line 176
   at lambda_method(Closure , Byte[]& , Int32& , SingleContentResponse )
   at Ceras.Formatters.ReferenceFormatter`1.Serialize(Byte[]& buffer, Int32& offset, T value) in C:\projects\ceras\src\Ceras\Formatters\ReferenceFormatter.cs:line 176
   at Ceras.CerasSerializer.Serialize[T](T obj, Byte[]& buffer, Int32 offset) in C:\projects\ceras\src\Ceras\CerasSerializer.cs:line 438
   at Ceras.CerasSerializer.Serialize[T](T obj) in C:\projects\ceras\src\Ceras\CerasSerializer.cs:line 384

Does anyone have any ideas what could cause this?

Thanks in advance!