We’ve looked around all over the net and found other developers having similar problems; with suggestions that we tried but still failed.
Here’s the error: http://i.imgur.com/bDYnRHG.png?1
We tried the following:
Changed Framework/Header/Library Search Paths. (removing all of the search paths; removing all the search paths save from the $(inherited); added “.” + recursive; *as suggested from various threads *both in Project and Targets)
Removing and re-adding the FacebookSDK.framework
Player Settings > Other Settings > Optimization > Stripping Level > Strip Assemblies