I get an error message and it fails to import when using UV Tools. I can open it in Blender when converting the .kmz file to colada

Thanks for the links. Tried the triangulate plugin. It worked great! However, still gives an error when trying to import into Blender. Tried both v 2.45 and 2.49

Looks like a good idea, but does not import into Blender 2.45