Problem with NNScript mIRC

Hey

I keep trying to get onto mIRC using NNscript. Ive never had a problem with it, but now its asking me to register, and wont let me continue to connect. Whenever ive had this problem in the past, it normal changes the "EXIT" button to a "Continue" button when you restart the program - however ive tried it several times and it wont change.

Anything i can do to stop this? As id rather not uninstall it and loose all my settings, channels, bncs etc

thanks