I once encountered the same problem with the KML file. I was using the QuickMap extension for loading US states.The solution was putting the .kml file in the extension folder under the path:
Hope this resolves the issue.
Bjorn, thank you so much for fixing the file. It works like a charm now
Bas, i think I can understand why. The files were downloaded from a Romanian site, I think that's why it had one of the counties spelled that way.
Thank you both for your help, this fixed file will be very useful to the other romanian developers that will encounter this problem.