I have installed both MapWindow GIS, and Shape2Earth eval version. I'm trying to export a polygon shapefile to KML, but I always get this error with any polygon:
Could not load type "PartBounds" from assembly 'MapWinGeoProc, Version 1.0.2350.29003, Culture=neutral, PublicKeyToken=null'

I have successfully exported points and lines, but not polygons. Is this a problem with my polygon shapefile or the software?