Develop with Xamarin Studio

When i sync monodevelop project , here has some problem 30969-xamarinstudio1.jpg

30970-xamarinstudio2.jpg

my Xamarin Studio version is 5.2.1 , my unity3d version is 4.3.1;
Does anyone know why ?

Xamarin Studio does not support development in Unity Script or Boo.

If you are developing in C# this should not be an issue(perhaps there’s an easy way to tell Unity to not generate those ptojects).

Think there is another .sln file that only includes the C# projects (ends with -vs suffix).