Error Message installing The Grand :(

Hello lovelies,

I’m experiencing a problem installing The Grand and I’m hoping somebody might be able to propose a solution.

I’ve used Cubase Essentials 5 for years on my Windows 7 desktop PC. I recently decided that I’d like to install a new MIDI piano instrument to use with my M-Audio Oxygen 61 keyboard. I chose The Grand. The source is here:

I can successfully download all seven parts using FireFox as my browser, but when I attempt to install is, by running the executable file (part 1)…
The Grand Error Message.jpg
Does anyone have any ideas?

Thanks in advance,