Help!!! Can't enter code in car300 radio

Just had a new alternator fited to my vectra, now "safe" appears in display, not allowing me to enter my code. I have the code and have used it before (so i know it works) but for some reason it will not allow to enter it now. It may be locked but I don't know why since I have not tried to enter code in yet. Please, please, please can anybody help!!!

Many thanks in advance.

Fixed the problem now, so no need to reply,


Thanks!!!!!!!!!!!!!!!!!!!!!!!!!!:woot: