A couple of people have reported this. Try deleting the app and downloading the update again. It may be that an unstable connection on your initial download has resulted in some of your update files becoming corrupted.

Make sure that you have a stable connection when you do this – high speed broadband wifi is best as 3G/4G can tend to drop in and out. A good test is to see how fast a web page loads in Safari. If it’s consistently really fast, then it should be okay.

You can find some other solutions for crashing at: https://tstotips.wordpress.com/2013/01/30/my-game-constantly-crashes-after-a-few-minutes-of-play-what-can-i-do/