Actually, I am not sure if it as iPad issue or a Zynga issue. It works perfectly on my wife's iPad and not on mine. And mine has much more free memory than hers.
Don't know how to remedy this.
Murray in Philly
My wife is obsessed with that game and hers was not loading and so I browsed the web and this is what worked for her on her iphone 4s:
double take the home button and a list of open apps will appear at the bottom of the screen. Hold the first app down for two seconds and a red circle will appear with a dash, find the open app scramble in the lower list of all open apps and close it, click the home screen button again to bring up the apps, click scramble and you should be good to go .....