Shaker will turn but with flashing light

Bought Shaker for my daughter in July, Played great for a while and downloaded music twice. By the way I am on a MAC. Shaker will turn on with the drum roll but then the light flashes multiple times then stops and repeats over and over very quickly. Will no do anything else. Will not mount on my desktop. Did not keep the CD that came with it because I believe it was for mostly PC’s. Like the product when it was working but even the manual does not have info about flashing light. Anyone know how to fix this problem…Thanks!