No platforms found (Android Build)

I get this error when trying to build for Android.


But as you can see, I do have Android 4.0 included (this is inside of Android SDK Manager):


I already tried the solution provided at:

and it did not work.

Any ideas? Thanks in advance.

same Error

You must install the version of the sdk r20. Higher version will not work.

I don’t know if you fixed the error,but if more people has this error, this video has the solution to this error.
It’s in spanish,but only you have to follow the steps he do.