Amazon AppStore Version 4.9 fixes the problem with WwF 5.9 from PlayStore, Samsung Store, FaceBook AppStore, etc. WwF 5.9 does not work on the Galaxy Tab 2 10.1 that I had just bought for my wife. None of the editions freely available from any source worked until I downloaded the Amazon AppStore application via Email notification (must uncheck 'Unknown Sources' in the Security tab of the settings app to download) and then after installation you are asked to activate through your facebook login. She got all her games and they all worked. She now has an Amazon AppStore Icon and a Words With Friends Icon and the game works without a problem. Don't forget to turn off 'Unknown sources' in the ecurity tab for safety's sake.