Problem with demo program - library file from github does not load into compiler

Hardware MKR Family MKRVIDOR4000
1

REF: https://www.arduino.cc/en/Guide/MKRVidor4000
Trying to get the BLINK example working, I downloaded zip files from github.
Then, per instructions:
Sketch -> Include Library... -> Add .ZIP Library and select the file.

These zip files load into the library okay:
VidorBoot-master.zip
VidorGraphics-master.zip
VidorPeripherals-master.zip

This zip file does not load:
VidorFPGA-master.zip
Error message:
Arduino: 1.8.5 (Windows 10), Board: "Arduino MKR Vidor 4000"

Specified folder/zip file does not contain a valid library
Specified folder/zip file does not contain a valid library

What is the solution? Thanks.

2

Wd0ug:
Then, per instructions:
Sketch -> Include Library... -> Add .ZIP Library and select the file.
...
This zip file does not load:
VidorFPGA-master.zips.

Please point out the exact part of the instructions that lead you to think you should install that file that way so those instructions can be fixed to prevent future confusion.

Wd0ug:
Specified folder/zip file does not contain a valid library

The error message is telling the truth. VidorFPGA is not an Arduino library. From the repository's readme:

This repository includes FPGA IP Blocks compatible with the Arduino Vidor family of products and is aimed to users already familiar with FPGA development process.