I have the same error but I am still not tried what he said :
Code:
Steps to install and use Keygen with new update:
Install older version of MOZOJ sender (eg: 2.7.6..)
use keygen to activate.
uninstall older version of MOZOJ sender (eg: 2.7.6..)
Install the latest update.
BOOM! YOU CAN NOW ENJOY EVERY UPDATE.