I recently bought a Snapshot license and installed the WPMU

Hi,

I recently bought a Snapshot license and installed the WPMU DEV Dashboard on my multisite application running WP 3.9.1. I went to the Plugins link in the WPMU DEV menu and hit the blue Install button under the Snapshot description, after which I got the following error:

Downloading install package from https://premium.wpmudev.org/wdp-un.php?action=install&key=6071e0cec34bd4b6a16be28ef56f7063685125d8&pid=257…

Download failed. SSL certificate problem: unable to get local issuer certificate

I'd be grateful for any hints on how to get Snapshot installed.

Thanks,
Ondrej