You try to run matlab but get an error about licensing like this
License checkout failed.
License Manager Error -15
MATLAB is unable to connect to the license server.
Check that the license manager has been started, and that the MATLAB client machine can communicate with the license server.
Troubleshoot this issue by visiting: http://www.mathworks.com/support/lme/R2013a/15
Licensing error: -15,570. System Error: 115
This means that for some reason your workstation can't contact the licensing server hosted with campus.
First check to see if the license servers are up and have licenses available here: