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WARNING: Mountain Lion OS X 10.8 and NXT-G

So I did my backup and decided to upgrade to Mountain Lion Then found out that it broke my NXT-G software -it didn't start anymore!@%#!!!

When this happened I was a very upset... so i posted a comment on my FB and Raghav a student I met in India confirmed to me that he got his working on a new 10.8... Really? Cool!...  So i tried something.

I simply re-installed the program from the available ISO (not the cd) on the LEGO website and luckily it all worked just fine after that!! Since this will happen to others let me share the workaround:

Content of MINDSTORMS NXT 2.0.iso
with EngRet.mpkg selected
Here are the step: 

1) Do a Time Machine backup and go ahead * update your mac to Mountain Lion

2) Go to and download the MINDSTORMS NXT 2.0.iso file

3) If double clicking on the iso file gives you authority issue simply right click on it and select OPEN

4) Don't bother with the Install icon, instead just pick your language Ger Dut Eng Fra Ret.mpkg

Icons found once installed
5) Right click on your language package and select OPEN

6) Accept licenses

7) Reboot to complete

8) Click on the NXT-G icon in the Application folder or from your dock -like before- and now you can get back to work on that robot program :)

My import block collection,
some installed without owning the senor just to check them out!
You will be happy to know that all your imported NXT-G blocks are still there.

I also posted an answer here** and I hope niltz and afink1966  can get their's working soon!

Let us know how this works for you :)

N.B.: The iso file for NXT-G Retail is also good for installing on Windows system.  ;)

* if you are worried don't install 10.8

**LEGO forum link

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