I've been using the Google Play Services (Froyo) component in my project for a good while now with no problems during development.
However, I've just tried to build in Release for the first time, having always built in Debug before. Attempting to build produces a linker error:
/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets: Error: Error executing task LinkAssemblies: error XA2006: Reference to metadata item 'Android.App.Fragment' (defined in 'GooglePlayServicesFroyoLib, Version=220.127.116.11, Culture=neutral, PublicKeyToken=null') from 'GooglePlayServicesFroyoLib, Version=18.104.22.168, Culture=neutral, PublicKeyToken=null' could not be resolved.
I was originally using Rev 10 of the component, I've tried updating my Android SDK, and installing instead new Rev 12 version of the Google Play Services (Froyo) 12 Xamarin Component - but still no joy. It builds in Debug, but not release.