I have an iPhone 32gb 4S, a Macbook and I just bought an iPad 3 today. I signed in my apple account on my ipad and it downloaded all the apps i had on my iphone. The facebook app hasn't worked at all since i've gotten it. I tried signing in through the app itself, and an error screen pops up saying unable to log in. I also went through settings and chose the Facebook option through there, and signed in through that and it still didn't work. I try to open it and it say Error with Single Sign On. This is very frustrating because I know the facebook app should work no problem on the ipad 3. has this happened to anyone else, or does anyone have any tips/tricks?