I\'ve searched for an answer to this question and have been unable to find any answers.
I\'ve got a range of iOS apps that I want to use the same Facebook app. The S
I found the useful "unknown_error" message only occurred when authenticating via the iOS Facebook app.
A quick and dirty workaround is to force the Facebook SDK to use mobile safari for authentication. Look for [self authorizeWithFBAppAuth:YES safariAuth:YES] in Facebook.m and change the FBAuth value.
Not the nicest solution... but if you need a project out of the door... ;)