Проблема в новом проекте blank android в visual studio 2015

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Привет,
Я установил Xamarin в visual studio 2015.
С помощью новой опции в visual studio 2015 при создании проекта Android появляется следующее сообщение об ошибке.

"ссылка на объект не установлена на экземпляр объекта"

Кроме того, в SDK-менеджере на фото ниже я не вижу, проблема это или нет. Но ни одно из следующих созданных сообщений не установит уровень api android.

Preparing to install archives
Downloading Android SDK Tools, revision 25.2.2
Download finished with wrong size. Expected 301642481 bytes, got 1487 bytes.
Downloading SDK Platform Android 5.1.1, API 22, revision 2
Download interrupted: Unexpected HTTP Status 416
Downloading Sources for Android SDK, API 22, revision 1
Download interrupted: Unexpected HTTP Status 416
Skipping 'Android TV ARM EABI v7a System Image, Android API 22, revision 1'; it depends on 'SDK Platform Android 5.1.1, API 22, revision 2' which was not installed.
Skipping 'Android TV Intel x86 Atom System Image, Android API 22, revision 3'; it depends on 'SDK Platform Android 5.1.1, API 22, revision 2' which was not installed.
Skipping 'Android Wear ARM EABI v7a System Image, Android API 22, revision 7'; it depends on 'SDK Platform Android 5.1.1, API 22, revision 2' which was not installed.
Skipping 'Android Wear Intel x86 Atom System Image, Android API 22, revision 7'; it depends on 'SDK Platform Android 5.1.1, API 22, revision 2' which was not installed.
Skipping 'ARM EABI v7a System Image, Android API 22, revision 1'; it depends on 'SDK Platform Android 5.1.1, API 22, revision 2' which was not installed.
Skipping 'Intel x86 Atom_64 System Image, Android API 22, revision 5'; it depends on 'SDK Platform Android 5.1.1, API 22, revision 2' which was not installed.
Skipping 'Intel x86 Atom System Image, Android API 22, revision 5'; it depends on 'SDK Platform Android 5.1.1, API 22, revision 2' which was not installed.
Skipping 'Google APIs ARM EABI v7a System Image, Android API 22, revision 10'; it depends on 'SDK Platform Android 5.1.1, API 22, revision 2' which was not installed.
Skipping 'Google APIs Intel x86 Atom_64 System Image, Android API 22, revision 10'; it depends on 'SDK Platform Android 5.1.1, API 22, revision 2' which was not installed.
Skipping 'Google APIs Intel x86 Atom System Image, Android API 22, revision 10'; it depends on 'SDK Platform Android 5.1.1, API 22, revision 2' which was not installed.
Skipping 'Google APIs, Android API 22, revision 1'; it depends on 'SDK Platform Android 5.1.1, API 22, revision 2' which was not installed.
Done. Nothing was installed.

изображение ссылки(status SDK-Manager)

Что я уже пробовал:

когда я создаю проект Android в visual studio, появляется сообщение об ошибке.

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