I have created new F# Xamarin.Mac Project (using trial Xamarin.Mac license), and have several problems:
- After building and running it right away throws NullReferenceException in AppDelegate.fs for property Window in line:
- It does not generates h and m files for MainWindowController, so I need to make them manually in Xcode.
- After creating design in Xcode and returning to Xamarin Studio, it generates MainWindowController.Designer.cs, which goes after AppDelegate.fs, which causes compiler error on  attribute (which should be in the last file in project).
- And it has second compiler problem - it cannot find property Window in MainWindowController type (in the same code line as in point 1), probably can't handle properly partial types from MainWindowController.fs and MainWindowController.Designer.fs.
Could you please confirm if F# does really works with Xamarin.Mac with UI, or it only works with library projects?