Webstore, How to apply new offline license file for MATLAB on Mac OS X
You will need to re-activate MATLAB with the new file. First try, Help->Licensing->Update Current License, from with in the MATLAB application. You will find there is the standard Help menu in the OS X menu bar, and then there is the MATLAB Help menu in MATLAB's toolstrip. The licensing submenu is located in the MATLAB Help menu, which is marked in the toolstrip by a white circle with a black question mark inside of it. Another method to do this in OS X is to go to the Applications folder, ctrl-click on MATLAB_R*.app, and select "Show Package Contents", then run the "Activate.app" application.
How do I apply my new offline license file for MATLAB on Mac OS X?