I'm trying to install my purchased copy of the full 'The Walking Dead' game on my MacBook Pro but the program won't even install. I downloaded WalkingDead100_v3.dmg from https://www.telltalegames.com/mytelltale/purchases, and the download appears to have completed successfully. When I click on the .dmg file, I get a pop-up stating that:
The following disk images couldn't be opened
WalkingDead100_v3.dmg not recognized
That's it - I'm dead in the water.
I'm running Mac OS X Lion, 10.7.5, and yes I already disabled Gatekeeper as suggested by DjNDB.