I'm seeing some very, very odd behavior out of the Mac version of episode 1 here.
1. The game downloads via Safari at about 400 MB, auto extracts into my Downloads folder for a total size of 556.8 MB.
2. I launch the game to the launcher window. There's a play button.
3. I click Play, and the game proceeds to download something BIG. Again.
4. It finishes at 100%, and does nothing. No disk activity, no network activity. I try clicking the 100% and it animates back down to 0% and starts to download AGAIN!
Helluva first puzzle, guys.
Seriously, though, I did some investigation, and I'm finding that it's actually redownloading the exact same game's executable to ~/Library/Application Support/Telltale Games/BackToTheFuture101 DRM 15.05/, but never extracts it out of a zip file.
I'm stumped. HELP!
As a matter of info, here's some possibly important information:
MacBook Pro 15" Early 2010 model
2.66 Core i7
4 GB RAM
Latest Apple updates across the board
Other neighbors in the Telltale Application Support folder: