Build in Xcode 7.1 failing with Facebook4 plugin

ionic-v1
1

Sorry to cross-post here from Github, but getting tumbleweeds there. Wondering if anyone else here has had this problem, and managed to solve it.

My copy of Xcode just updated to 7.1. Prior to updating my project with this plugin would build fine. After updating I am getting the following error:

Undefined symbols for architecture i386:
  "_FBSDKErrorLocalizedDescriptionKey", referenced from:
      ___31-[FacebookConnectPlugin login:]_block_invoke in FacebookConnectPlugin.o
      ___34-[FacebookConnectPlugin graphApi:]_block_invoke in FacebookConnectPlugin.o
      ___34-[FacebookConnectPlugin graphApi:]_block_invoke246 in FacebookConnectPlugin.o
      -[FacebookConnectPlugin loginWithPermissions:withHandler:] in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKAccessToken", referenced from:
      objc-class-ref in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKAppEvents", referenced from:
      objc-class-ref in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKAppInviteContent", referenced from:
      objc-class-ref in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKAppInviteDialog", referenced from:
      objc-class-ref in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKApplicationDelegate", referenced from:
      objc-class-ref in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKGameRequestContent", referenced from:
      objc-class-ref in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKGameRequestDialog", referenced from:
      objc-class-ref in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKGraphRequest", referenced from:
      objc-class-ref in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKLoginManager", referenced from:
      objc-class-ref in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKMessageDialog", referenced from:
      objc-class-ref in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKShareDialog", referenced from:
      objc-class-ref in FacebookConnectPlugin.o
  "_OBJC_CLASS_$_FBSDKShareLinkContent", referenced from:
      objc-class-ref in FacebookConnectPlugin.o

Build for Android is working fine. I made no changes to the app. I am getting the same error with earlier app versions that previously built successfully.

TIA