Thank you for your post.
FileMaker Go only supports the latest free versions of iOS 6 and iOS 7. Apple will not allow you to get the latest iOS 6 version anymore, so your only option is to upgrade to iOS 7.
So, iOS 6.0.2 is not supported? I may need to consider carefully in my design then, as a lot of my users are still using iOS 6.0.x, may have to just continue using FM 12 for now.