deleted from my mac to install on my new desktop

i run d2LOD it says "blizzard is unable to properly identify your application version" or something

many thanks for help

If you are receiving an error message that says "unable to identify application version", then your game data may have been altered or corrupted in such a way that Battle.net no longer can determine if you need the patch.
Right off the blizzard site..there is also various fixes on it..
http://us.blizzard.com/support/article.xml?locale=en_US&articleId=20846