Googleplay Downloader problem

As I’m sure most of you know, Google recently released an expansion add-on for Android apps that exceed the 50 MB limit, and I guess the way you use it is by clicking on the Split Binary option in the Build Settings section. I downloaded the GooglePlay OBB Downloader add-on. I tried to build but returned the following error:

Assets/Plugins/Android/GooglePlayDownloader.cs(8,24): error CS0246: The type or namespace name `AndroidJavaClass’ could not be found. Are you missing a using directive or an assembly reference?

I don’t know what this means but it stops the build process. Mind you that I’m using Playmaker for my scripting. Is there anyway to fix it?

Whatever the error is, it causes Build Process to terminate even when I’m trying to Build for other platforms. I don’t know anything about programming, but I did a test Build the coding used in the Plug-in in MonoDevelop and it turned back 308 errors. I couldn’t begin to know how to fix it. Anyone know what the problem is?