Nostalrius Begins - Quality wow vanilla realm (1.12)

I have downloaded the mac client, often linked, here-

viewtopic.php?f=32&t=1377

After download, I unzip the file. The trouble is, when I double click on the WoW Classic file, the one with the classic W icon, the screen goes black for about 10 seconds and then I get an error message from my mac, "World of Warcraft has quit unexpected."

Any ideas what I need to do?

OS X Yosemite, 10.10.2

After 2 days of trying to get the dang thing downloaded i finally got it...now im having the same problem. Wow quit unexpectidly.

I was never able to download that client and I tried A LOT. there are two other clients to try in this link if you think the problem is with the client version.

viewtopic.php?f=45&t=6125&p=51827&hilit=mac+client#p51827