[android] Location of the android sdk has not been setup in the preferences in mac os?

i tried everything/....but only this thing worked for me:

To fix this, I went to help - Install New Software... - from the "work with" drop-down box I selected http://dl-ssl.google.com/android/eclipse/ - I then check marked "Developer Tools" and hit the Next button. I then followed the prompts and it basically did a re-install. It took less than 5 minutes. That resolved the error.

Now Im back up and running, and I got the lastest version of Eclipse.

Thanks a lot Nadir