Hey - this requires a more in-depth reply, but best I can tell, the iPad sim offers incomplete implementations of some frameworks we need to include the iPhone4 camera stuff. This is worse than no implementation, because the weak linking still tries to load the framework but then finds it lacks symbols we need. I am not sure what a good solution to this is, unfortunately, other than manually removing the iPhone4 camera stuff from Cinder itself and rebuilding. We'll try to track down a better solution soon...
-Andrew