Hi,
Both problems appeared after I installed the latest version of Xamarin, which after what it was asking me to install Xcode 8.
Problem 1: MAJOR
I can't compile anymore.
I'm trying to compile on Xamarin but it is now crashing and giving me "This version does not have support for files saved in Xcode 8 format" for storyboard file. I have search the web and it says that the problem should be fixed by now... :-/ Any clue ?
Problem 2: ANNOYING
Everytime I edit my storyboard with Xcode (and no I won't use Xamarin Editor), it is now closing Xcode on every sync, not to mention it takes a while reopening xcode and storyboard everytime... it might be related with problem 1 o.O
Answers
Problem 1: See this post for a workaround.
Problem 2: That's a known issue that may or may not get addressed anytime soon.
Edit: I have deleted my comment.