I tried with the example with no success. Am I missing something.
B4X:
Application_Start
Application_Active
Error occurred on line: 75 (Main)
-[FBSDKLoginManager logInWithPermissions:fromViewController:handler:]: unrecognized selector sent to instance 0x2805deee0
Stack Trace: (
CoreFoundation 409609CD-8410-38E1-BA5D-BDED609D2018 + 1222148
libobjc.A.dylib objc_exception_throw + 56
CoreFoundation 409609CD-8410-38E1-BA5D-BDED609D2018 + 192168
CoreFoundation 409609CD-8410-38E1-BA5D-BDED609D2018 + 1238676
CoreFoundation _CF_forwarding_prep_0 + 92
B4i Example -[iFacebook SignIn] + 152
B4i Example -[b4i_main _btnsigninfacebook_click] + 352
CoreFoundation 409609CD-8410-38E1-BA5D-BDED609D2018 + 1247072
CoreFoundation 409609CD-8410-38E1-BA5D-BDED609D2018 + 6976
B4i Example +[B4I runDynamicMethod:method:throwErrorIfMissing:args:] + 1608
B4i Example -[B4IShell runMethod:] + 448
B4i Example -[B4IShell raiseEventImpl:method:args::] + 1648
B4i Example -[B4IShellBI raiseEvent:event:params:] + 1580
B4i Example __33-[B4I raiseUIEvent:event:params:]_block_invoke + 60
libdispatch.dylib 5A83D0CF-8FB9-3727-8A32-012D20A47EC8 + 371112
libdispatch.dylib 5A83D0CF-8FB9-3727-8A32-012D20A47EC8 + 374052
libdispatch.dylib 5A83D0CF-8FB9-3727-8A32-012D20A47EC8 + 54708
CoreFoundation 409609CD-8410-38E1-BA5D-BDED609D2018 + 689992
CoreFoundation 409609CD-8410-38E1-BA5D-BDED609D2018 + 669212
CoreFoundation CFRunLoopRunSpecific + 424
GraphicsServices GSEventRunModal + 160
UIKitCore UIApplicationMain + 1932
B4i Example main + 124
libdyld.dylib 876FB49A-BFBA-37BF-AD37-6FFC90F7F981 + 6144
)