"NullPointerException" when writing to Spotfire file on the Spotfire server

Hi,
New to Knime. I can save the Spotfire file locally, but get the NullPointerException when trying to save it to the Spotfire folder (not the web server). There was one thread that indicated that this was being worked on by TIBCO/Knime. Any progress? and suggestions on what to do?
Thanks,
R