because you lock your firewall for configuration. you should deactivate it first in the options\advance tab
I have the same problem recenly. I thought it was FirstDefense-ISR. Because after I made a snap I couldn't deactivate the lock due to unrecognized password. But I later found out that if you exit L'n'S and then open it again, the saved password is gone. If you have this problem, just click ok. It will then unlock. Then re-define a new password. Hope that helps.
Thanks GreeenWhite. '' just click ok. It will then unlock. Then re-define a new password.'' That was it! Cheers Neggy