[racket] DrRacket for OS Lion

Good afternoon,
I've been having some trouble installing version 5.0.2 of DrRacket on my Mac which is running OS X Lion.Is there any Beta version which I can download?I would be tremendously thankful since I need it to work on a subject at my College.
Thank you for your time.
Best regards,
Rita Moreira

 		 	   		  
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