The problem appears to be because you're compiling with API 19 (KitKat), you want that selection to be API 23. If you want to have 19 as your minimum target you can select that from the 2nd dropdown.
Here's a screenshot of your options, but in a configuration that will compile:
I've also attached a demo app, using the latest update's references, for you compare against (note: do a rebuild after opening as I have removed the bin/obj folders).
If you are still having trouble, double check that your Android Support Libraries are using the correct version. You can check my sample project's nuget packages or go to this page
in the documentation.
Let us know how it goes.
Lance | Tech Support Engineer, Sr.
Telerik by Progress
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