Have you gone to Lego Education and downloaded the update?

http://www.legoeducation.us/eng/Support/NXTSoftwareUpdates.cfm?paID=5645

On Thu, 9 Aug 2012 11:48:44 -0400, Leandra Velasco wrote:

Hello All!  I need advice...

I have a Mac desk top and Mac Pro laptop, both operating on Mac OS X 10.6.8

After loading the NXT Software v2.1 on both computers, the program is NOT 
opening up.  It reads:  Error code 1003/A required file is broken

Has anyone had a similar issue?  Is it because the software is not compatible 
with Mac OS X 10.6.8? 

Any suggestions in fixing this issue?
Thanks a bunch!
Leandra

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