MATLAB freezing right after opening on Mac OS X

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I am trying to run MATLAB R2012a on Mac OS X 10.7.5. When clicking the icon, the splash screen appears, and after a while MATLAB opens. However, MATLAB's interface becomes completely unclickable - none of the buttons work. The only working option is "Matlab -> Quit MATLAB", which works perfectly.
When I run MATLAB through the terminal, I receive the warning described here, which seem unrelated. I noticed that when pressing Ctrl+C in the terminal, MATLAB responds by creating a new line in its command window. However, no other commands communicate.
Given this strange behavior, are there any suggestions as to what could be wrong?

Accepted Answer

Sean de Wolski
Sean de Wolski on 1 Jul 2013
  1 Comment
Matt on 2 Jul 2013
Thanks for the link, Sean. The original discussion and answer is here.

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