Error Message in FEKO Solver

Blessings.

I got this message when accessing FEKO solver:
 

The following message from the master process (MYID= 0):

ERROR 33114: Limits of the Feko Student Edition have been exceeded

See also message in the output file TWT Antenna v1.out

How can I proceed?

P.S.  I re-check my email and found out that I still need to set the environment variable in system setting.  Could this have been the cause of the current warning?

Thanks.