Xamarin.Mac project crashes at startup, what am I doing wrong ?

I downloaded Xamarin Studio (4.0.1), and created a new Xamarin.Mac project via the template. Without changing any code, I try to run the app. It immediately crashes with EXC_BAD_ACCESS (even before the debugger can attach). These are the details from the error report:

Exception Type:  EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x000000008fe01030

Backtrace not available

Unknown thread crashed with X86 Thread State (32-bit):   eax: 0x00000000  ebx: 0x00000000  ecx: 0x00000000  edx: 0x00000000   edi: 0x00000000  esi: 0x00000000  ebp: 0x00000000  esp: 0x00000000    ss: 0x00000023  efl: 0x00010202  eip: 0x8fe01030   cs: 0x0000001b    ds: 0x00000023   es: 0x00000023   fs: 0x00000000   gs: 0x00000000   cr2: 0x8fe01030 Logical CPU: 2

Binary images description not available

What am I doing wrong, and how can I make the project work ? Is there anything obvious I should check ?

This is fixed in Xamarin Studio 4.0.2