adding actionbarsherlock

I'm trying to do a project with actionBarSherlock work on android 2.3.3 And I have installed android 4.0 and 2.3.3

I download ActionBarSherlock and unzipped in Eclipse workespace.

And then open Eclipse go to File-> New -> Project -> Android Project From Existing Code.

In the next screen select the the ActionBarSherlock folder, a list of Eclipse projects

But "library" appears in a lighter color and I can not select it enter image description here

What am I doing wrong? thank you very much, sorry for my English

Solution

Check if you dont have any other project called "library" in workspace. Happened to me once.