Same thing I was thinking Steve. Also seems a bit light on the fruit, how many gallons is this? What was the expiration date on the yeast, may have been old? What was the temp of the water must when you added the yeast, too warm add the yeast may nor survive? BTW, You can always add another packet of yeast, and rehydrate in a couple of ounces of water like you did before.
Take an SG reading and see if it lower. Also the easiest way to tell if its fermenting with out taking a reading is lean down close to the must and listen, should hear some popping that means its fermenting. Honest it sounds a bit crazy but it works for those ninja yeast.
Some yeasts do take a bit to start like Wade said but this is usually a very durable yeast.
VC