My class page shows Elemental Affinity as Lightning for a Silver Dragon ancestry instead of Cold.

As far as I'm aware this is a known issue in the character builder that it shows the element randomly in the "Available at Higher Levels" dropdown if you aren't level 6 yet - but when you do hit level 6 it will show correctly in the builder and on the character sheet.

Edit: I just tried it and that is exactly what I experience.

@Emmber- I guess that makes sense that I see fire now.

@GPryromania - Emmber is correct, it is random (even though my ancestor is properly chosen) until you reach level six, then it is corrected. I refreshed the screen multiple times and got nearly every damage type.