Hello,

Following the guide here: https://developer.xamarin.com/guides/android/getting_started/installation/windows/manual_installation/ I wanted to install Xamarin Studio Manually (not Visual studio), because I already build native Android apps with the Android SDK/NDK and I didn't want the large download of VS, security updates, et cetera. This guide has the following comment: "When using Windows you have a choice of IDE – Xamarin Studio or Visual Studio".

The Xamarin Studio IDE starts but I have this problem (cannot select "Android" as a mobile target):
http://stackoverflow.com/questions/35625345/target-platform-is-disabled-in-xamarin-studio

OS Windows 7 64bit (6.1.7601)

The Ide.*.log file says:

 INFO [2016-06-29 13:33:32Z]: ANDROID: sdk: Key HKCU\SOFTWARE\Novell\Mono for Android\AndroidSdkDirectory found: Path contains adb.exe in \platform-tools (C:\bin\android_sdk).
    INFO [2016-06-29 13:33:32Z]: ANDROID: sdk: Key HKCU\SOFTWARE\Novell\Mono for Android\AndroidNdkDirectory found: Path contains ndk-stack.exe in . (C:\bin\android_ndk).
    INFO [2016-06-29 13:33:32Z]: ANDROID: sdk: Key HKCU\SOFTWARE\Novell\Mono for Android\JavaSdkDirectory found: Path contains jarsigner.exe in \bin (C:\bin\java\jdk).
    INFO [2016-06-29 13:33:32Z]: ANDROID: Did not find Xamarin.Android INFO [2016-06-29 13:33:32Z]: ANDROID: Found Android SDK. API levels: (none)

ERROR [2016-06-29 13:33:32Z]: Error detecting Xamarin.Android SDK `System.ArgumentNullException`: Value cannot be null.

• The SDK / NDK paths are set
• I have added a name in the configure project dialog
• Going to Add-ons Xamarin.Android is enabled.

Any ideas how to solve the issue?
Thanks