Called vtech today about mostly unused mobigo not identifying cartridges, they told me the toy is defective. It was a mobigo 1, which had a year warranty. We bought it too early for my son and it sat on a shelf for almost two years. We bought another from a craigslister whose son never used it only to find the same issue upon opening. Vtech suggested we purchase the Mobigo 2, but I am against doing so after finding out those only have a three month warranty. Quality control isssue?????