System.InvalidOperationException

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Cannot send command to the server because the response for previous one was not received.

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bei Rebex.Net.Ftp.OL(FtpState A)
   bei Rebex.Net.Ftp.CM(String A, String B)
   bei Rebex.Net.Ftp.KM(EndPoint A)
   bei Rebex.Net.Ftp.SM(String A, Boolean B, RS C, UP D, Int64 I, FtpTransferState J)
   bei Rebex.Net.Ftp.OO(String A, String B, Stream C, Int64 D, Int64 I, UP J)
   bei Rebex.Net.Ftp.PutFile(Stream sourceStream, String remotePath)
   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.FtpEngine.<>c__DisplayClass34_0.<DoSendFile>b__0()
   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.FtpEngine.<>c__DisplayClass53_0.<guardFtpCall>b__0()
   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.ActivePassiveDetectorGuard.doGuard()
   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.ActivePassiveDetectorGuard..ctor(IActivePassiveDetectorHolder holder, ActivePassiveGuardDelegate guardDelegate)
   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.FtpEngine.guardFtpCall(FtpCall call, HandleException handleException)
   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.FtpEngine.DoSendFile(SendFileInformation information)
   bei ZetaProducer.RuntimeBusinessLogic.Publishing.PublishEngineManager.DoCopyFiles(IEnumerable`1 filePaths)
   bei ZetaProducer.RuntimeBusinessLogic.Publishing.PublishFileOperationManager.ProcessCopyJobs(IList`1 jobs)
   bei ZetaProducer.RuntimeBusinessLogic.Publishing.PublishEngineManager.Process(PublishEngineParameterInfo pi)
   bei ZetaProducer.Main.BuildPublish.Central.NonVisualBuildPublishPerformer.doWorkPublish(Object sender, DoWorkEventArgs e)
   bei ZetaProducer.Main.BuildPublish.GuiBinding.AsyncRenderGuiBinder.backgroundWorker_DoWork(Object sender, DoWorkEventArgs e)
   bei System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)
   bei System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)

InvalidOperationException
{
	Message="Cannot send command to the server because the response for previous one was not received.",
	Data=
	[
	]
,
	InnerException=null,
	TargetSite=RuntimeMethodInfo: OL,
	StackTrace="   bei Rebex.Net.Ftp.OL(FtpState A)\\r\\n   bei Rebex.Net.Ftp.CM(String A, String B)\\r\\n   bei Rebex.Net.Ftp.KM(EndPoint A)\\r\\n   bei Rebex.Net.Ftp.SM(String A, Boolean B, RS C, UP D, Int64 I, FtpTransferState J)\\r\\n   bei Rebex.Net.Ftp.OO(String A, String B, Stream C, Int64 D, Int64 I, UP J)\\r\\n   bei Rebex.Net.Ftp.PutFile(Stream sourceStream, String remotePath)\\r\\n   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.FtpEngine.<>c__DisplayClass34_0.<DoSendFile>b__0()\\r\\n   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.FtpEngine.<>c__DisplayClass53_0.<guardFtpCall>b__0()\\r\\n   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.ActivePassiveDetectorGuard.doGuard()\\r\\n   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.ActivePassiveDetectorGuard..ctor(IActivePassiveDetectorHolder holder, ActivePassiveGuardDelegate guardDelegate)\\r\\n   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.FtpEngine.guardFtpCall(FtpCall call, HandleException handleException)\\r\\n   bei ZetaProducerPublishing.Runtime.Protocols.FtpProtocol.FtpEngine.DoSendFile(SendFileInformation information)\\r\\n   bei ZetaProducer.RuntimeBusinessLogic.Publishing.PublishEngineManager.DoCopyFiles(IEnumerable`1 filePaths)\\r\\n   bei ZetaProducer.RuntimeBusinessLogic.Publishing.PublishFileOperationManager.ProcessCopyJobs(IList`1 jobs)\\r\\n   bei ZetaProducer.RuntimeBusinessLogic.Publishing.PublishEngineManager.Process(PublishEngineParameterInfo pi)\\r\\n   bei ZetaProducer.Main.BuildPublish.Central.NonVisualBuildPublishPerformer.doWorkPublish(Object sender, DoWorkEventArgs e)\\r\\n   bei ZetaProducer.Main.BuildPublish.GuiBinding.AsyncRenderGuiBinder.backgroundWorker_DoWork(Object sender, DoWorkEventArgs e)\\r\\n   bei System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)\\r\\n   bei System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)",
	HelpLink=null,
	Source="Rebex.Ftp",
	HResult=-2146233079
}