Job Tracker -> Assembly Cost

Anyone can help fix the following error?

Message: The requested service, ‘net.tcp://epicor10app/Test102400/Erp/BO/JobAsmblCosts.svc’ could not be activated. See the server’s diagnostic trace logs for more information.
Program: CommonLanguageRuntimeLibrary
Method: HandleReturnMessage
Client Stack Trace

Server stack trace:
at System.ServiceModel.Channels.ConnectionUpgradeHelper.DecodeFramingFault(ClientFramingDecoder decoder, IConnection connection, Uri via, String contentType, TimeoutHelper& timeoutHelper)
at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.SendPreamble(IConnection connection, ArraySegment1 preamble, TimeoutHelper& timeoutHelper) at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.DuplexConnectionPoolHelper.AcceptPooledConnection(IConnection connection, TimeoutHelper& timeoutHelper) at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout) at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout) at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) at System.ServiceModel.Channels.SecurityChannelFactory1.ClientSecurityChannel1.OnOpen(TimeSpan timeout) at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout) at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) at System.ServiceModel.Channels.CommunicationObject.Open() 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 System.ServiceModel.ICommunicationObject.Open() at Epicor.ServiceModel.Channels.ChannelEntry1.CreateNewChannel()
at Epicor.ServiceModel.Channels.ChannelEntry1.CreateChannel() at Epicor.ServiceModel.Channels.ChannelEntry1.GetContract()
at Epicor.ServiceModel.Channels.ImplBase1.GetChannel() at Epicor.ServiceModel.Channels.ImplBase1.HandleContractBeforeCall()
at Erp.Proxy.BO.JobAsmblCostsImpl.GetJobAsmblCosts(String ipJobNum, Int32 ipAssemblySeq)
at Erp.Adapters.JobAsmblCostsAdapter.GetJobAsmblCosts(String ipJobNum, Int32 ipAssemblySeq)

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