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我正尝试使用WCF与SQL数据库同步SQLCE数据库。我有一个继承自KnowledgeSyncProvider的代理。我重写（其中包括）以下方法未将SyncKnowledge对象传递给WCF服务
public override ChangeBatch GetChangeBatch(uint batchSize, SyncKnowledge destinationKnowledge, out object changeDataRetriever)
{
GetChangesParameters changesWrapper = proxy.GetChanges(batchSize, destinationKnowledge);
...
}
当执行GetChangesParameters changesWrapper = proxy.GetChanges(batchSize, destinationKnowledge);代码，我收到以下错误
Retrieving the COM class factory for component with CLSID {EC413D66-6221-4EBB-AC55-4900FB321011} failed due to the following error: 80040154.
堆栈跟踪：
Server stack trace:
at System.ServiceModel.Channels.ServiceChannel.ThrowIfFaultUnderstood(Message reply, MessageFault fault, String action, MessageVersion version, FaultConverter faultConverter)
at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at WCF_Sync_Common.IRelationalSyncContract.GetChanges(UInt32 batchSize, SyncKnowledge destinationKnowledge)
at ConsoleApplication10.RelationalProviderProxy.GetChangeBatch(UInt32 batchSize, SyncKnowledge destinationKnowledge, Object& changeDataRetriever) in C:\Users\amitesh.AKL\Documents\Visual Studio 2010\Projects\ConsoleApplication10\RelationalProviderProxy.cs:line 81
at Microsoft.Synchronization.KnowledgeProviderProxy.GetChangeBatch(UInt32 dwBatchSize, ISyncKnowledge pSyncKnowledge, ISyncChangeBatch& ppChangeBatch, Object& ppUnkDataRetriever)
好像在错误与SyncKnowledge对象在通过线路传递时有关。我试图调用没有SyncKnowledge对象的代理方法，并能够调用该方法。但只要我包含对象，我就会得到上述错误。任何人都可以解释，指向我正确的方向上我缺少的东西