Can't seem to get link.xml working with AWS SDK

Hi, having a horribly difficult time here, been trying to fix this for hours... We're using the AWS SDK and it seems to be getting stripped, specifically a constructor inside one of the assemblies. This is the error we're encountering in Xcode when the games runs on a device: MissingMethodException: Method not found: 'Default constructor not found...ctor() of Amazon.Util.Internal.PlatformServices.NetworkReachability'. I've tried setting up the link.xml file in both of the following ways: ...and this way... Neither of them seem to be working. Using the Assembly Browser in Mono and switching between C# and IL, I can see IL is missing the constructor that is clearly present in C#. Any help would be greatly appreciated, running out of things to try. Thanks!