Naturally in this instance it would be prudent for DBTech to grant Christos the use of his disabling code (so allowing his mod pages NOT to show the DBTech copyright) to his installed version of DBTechs' Copyright Manager.
@DBTech, why not just build in an option in settings to add custom pages..etc to be exempt, you can always double check to see if the user is trying to exempt the copyright from standard vb pages, shouldn't be too hard and then everyone will be happy