The creos have said that no new information can ever be added - and even scientists admitt this.
I'm not sure which scientists you are referring to...
One form of mutation is duplication, in which DNA sequence is duplicated - in some cases duplicating an entire gene or multiple genes. At this point many argue that nothing new has been created, instead there are just two identical (redundant) copies of a duplicated gene.
However, subsequent mutation acts on the two copies of the genes independently, and so they change, diverging from each other over time. This divergence can produce two genes with different functions from what was originally a single gene. In this way, genetic "information" is added...
Hopefully that makes sense; does it help answer your question?