Something is terribly wrong with the installation or the floor, or the material.
What was there before?
I would check installation first. Find out the manufacturers recommendations for installing the product and make sure it was followed.

first question...how long was the wood in the room(s) before it was installed?hard wood must be at room temp.for a week at least.......if this was done,then you need the mgf's rep to inspect the floor,and replace it under the warrenty....good luck

Hello, I know your post is quite old, but I'm having the same problem with my Mercier floor and I'm just wondering how you made out.