Bd Not Remembering Settings

On the firewall part of internet security 2008, bit defender is not remembering settings.


Last night, I set it to "Ask" protection level and then about 10 rules got added for programs to be allowed access to the internet.


This morning, I was asked about all of them again (what a nightmare!) and realised the overall level had defaulted back to "allow recommended" and nothing had been saved.


How can I stop this from happening?