As best I could tell, this wasn't a contrail as it hung in the sky with other clouds way before sunset. As the sunset, other clouds dissipated and this one thinned. Of course, Doug could be right but it seemed more cloud like than contrail.
There is an issue with Uploading Photos (attachjments). I am not sure what the problem is, and I am looking into it. You can still try to Create your Threads and Upload your Photos, but it is hanging up during the Upload.