I'm using the Facebook-iOS-SDK-4 for a FB login but when I try to compile I have this error.
2015-06-05 03:15:02.001 Hooiz[4681:781254] *** Terminating app due to uncaught exception 'InvalidOperationException', reason: 'fb620223481391648 is not registered as a URL scheme. Please add it in your Info.plist'
My .plist is like the Facebook documentation :


Check your face book app id once again. Add your registered face book app id in your info.plist. And Also add URL Scheme identifier, fbXXXXXXXXXXXX(XXXXXXXXX is your facebook app id which is added previously) to info.plist and check
Hope this helps!!