JAR Bindings Library problem

Hello,

I'm trying to build a C# JAR library, using Visual Studio Community 2015, to allow me to use the built-in IR hardware scanner on a Mitac Android (4.2.2) device. I've already successfully written one app, but this was just using Bluetooth comms for printing.

Mitac have supplied a couple of JAR files, so I've attempted to follow the bindings project instructions fro here:
https://developer.xamarin.com/guides/android/advanced_topics/binding-a-java-library/,

I'm not sure what I am doing wrong, I keep getting the error:

Severity   Code    Description Project File    Line    Suppression State
Error       "generator.exe" exited with code -532462766.    ClassLibrary2   C:\Program Files (x86)\MSBuild\Xamarin\Android\Xamarin.Android.Bindings.targets 413

The project output is attached.

Any help or pointers would be greatly welcomed, thanks!