Problem with Norton Utilities

When running Norton Utilities, I get an error message when updating registry that says I have to "register to repair all errors." When I try to register, it says I have to purchase the program. I already purchased the program and I've got 72 more days on it.

I'm really worried because this has happened for the last two months and I have over 140 errors that need to be fixed.

I appreciate help with this.