I am using ShareKit.
It’s working properly with Twitter API, but getting error in Facebook API.
In SHKConfig
#define SHKFacebookKey @"my Facebook Key"
#define SHKFacebookSecret @"my Facebook Secret"
Error image

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You are probably using old original share kit, which contains obsolete version of Facebook iOS sdk (FBConnect). I suggest that you use updated ShareKit 2.0. Its installation has changed a lot, so make sure you carefully follow install wiki. Best bet is to readd new ShareKit from scratch, if you decide to use it.