Error When Trying to Write a Text File Out

I have a file coming in that contains an error that I place in a SQL Table.  I then retreive all errors from the table, run them through a xslt for fomatting then write that out to a text file.

The xst output is:

20150513,2786689,SAUCE  HOLNDAIS PLST JUG      ,,

I have a topic USFoodsErroFile that has 2 dependancies:

    USFoodsErrorFile.Subscriber

    USFoodsErrorFile.FileOut.EndPoint

When executing the Publish Process Step I get the following error:

Exception Type: System.Collections.Generic.KeyNotFoundException
Exception Message: The given key was not present in the dictionary.
Exception Trace:    at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
   at Neuron.Esb.Pipelines.EsbMessagePublishPipelineStep.OnExecute(PipelineContext`1 state)

Any ideas why this isn't working?