Why do I get Licensing Error -8,523

I installed Matlab 2014b on my Arch Linux x64 Machine. I have a student license from my University. When I activated my product, it says succesfully activated but when I run matlab from terminal I get this error:

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  % code

License checkout failed. License Manager Error -8 Make sure the HostID of the license file matches this machine, and that the HostID on the SERVER line matches the HostID of the license file.

Troubleshoot this issue by visiting: http://www.mathworks.com/support/lme/R2014b/8

Diagnostic Information: Feature: MATLAB License path: /home/bilal/.matlab/R2014b_licenses/license_bilal-pc_968754_R2014b.lic:/opt/matlab/licenses/license. dat:/opt/matlab/licenses Licensing error: -8,523.

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