Error from Server in SimpleFtpUpload @ 12.06.2016 23:55:59.027
Simple FTP Uploader for Source 0
Exception Detail:The requested name is valid, but no data of the requested type was found
Thanks for the insight.
I checked the wunderground forums and they have made a minor change to their FTP process and I have adjusted the setting to match the change. Sometimes it really is the simple stuff.