Problem Getting Nature Pack From Asset Store

Unity Engine
1

I posted this in the Asset Store forum but maybe it belongs here. When I downloaded the new Nature Pack by Michael O. I could not import it. I got a message which said “Package has unknown format”. How do I get that asset?

2

http://forum.unity3d.com/threads/96225-I-purchased-the-Nature-Pack-but-cannot-use-it-Caitlyn-Unity-team-some-Help-here