Hi,

Any idea what this error is? I kept getting this and I couldn't get the site going.

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An unhandled exception occurred and the process was terminated.

Application ID: DefaultDomain

Process ID: 1620

Exception: System.Runtime.Serialization.SerializationException

Message: Type 'umbraco.DataLayer.SqlHelperException' in Assembly 'umbraco.DataLayer, Version=0.3.0.0, Culture=neutral, PublicKeyToken=null' is not marked as serializable.

StackTrace:    at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter)

   at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter)

   at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck)

   at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck)

   at System.Runtime.Remoting.Channels.CrossAppDomainSerializer.SerializeObject(Object obj, MemoryStream stm)

   at System.AppDomain.Serialize(Object o)

   at System.AppDomain.MarshalObject(Object o)