Error converting KML file to IGC file

[navyav8er]

I have an iphone app that records my track while flying my Powered Paraglider in a KML file.  I drag and drop that file into RouteConverter and I can see it on the map and I have two items in the position list pulldown (one just has 2 points of start and stop, while the other has all of the positions long the track I flew).  I want to convert it to an IGC file with all of the points along the track I flew.  When I "save as" or "export" it as an IGC file, I get error (attached screenshot) and the created file is zero bites.  Any ideas on how to get this conversation to work?  BTW, I'm using a mac with RouteConverter 2.24.1     

Thanks, Scott