My two kids have ipad2 (wifi only iPads) and play the pocket edition in creative mode only. Since the new update 0.9.2 they can not get into each other's worlds. Kid1 can get into kid2 world but kid2 can not get into kid1 world, on the worlds they created before the update. Since the update they have been having this issue so I created new worlds for them to try to resolve it. In the newly created worlds neither can get into each other's new worlds. When they try, the program gets stuck on the "generating world building terrain" page and we have to swipe out the program in order to get out. I wanted to delete the program and re-download it to try and fix it, but did not know how to save the data for their worlds so we would not loose the content they put in their worlds. So this problem exists. Please let me know how I can fix this issue.