[racket] Error in starting DrRacket

Hello:

I'm using DrRacket on a MAC OS X Lion.  It worked well for a while.  Now I'm getting the error message

DrRacket quit unexpectedly.  

Nothing I do seems to get it to reopen.

However, the GRacket command opens and gives me a simpler code entry GUI than DrRacket.

Is there a way to fix this problem?

Thanks,

David Bower
 		 	   		  
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