Red Alert 3 (Mac) Activation Failed Solution
I just got a digital copy from gametreeonline.com. Dragged the app to /Applications, updated to newest version and fired it up. And Boo ! “Activation Failed, check your internet connection” blah blah.

After messing around for an hour, I found the solution. Not only you need “administrative privileges” as described in ReadMe, you have to actually be root to run this thing ! So that’s it, login as root, or open a terminal and run
sudo /Applications/Command\ and\ Conquer\ -\ Red\ Alert\ 3.app/Contents/MacOS/CNCRA3-launcher
. The problem was caused by SecuROM which needs to do its dirty stuff with root privilege.

ryumu* — April 8, 2009 @ 4:49 pm
I can’t activate..
Were you able to play by the solution?
anon — April 9, 2009 @ 4:14 am
Wow, I was about to buy this game online, but SecuROM is nasty stuff. I’ll be skipping this purchase for sure.
softboysxp — April 9, 2009 @ 2:14 pm
Yeah I can play it now
you can try login to root and activate the game
ryumu* — April 9, 2009 @ 6:26 pm
>you can try login to root and activate the game
i’m tried it. but i can’t activate
nerdii — April 21, 2009 @ 7:43 am
I have to same problem as well.
I tried the solution, but still can’t activate.
EA told me to do a disk scan with Disk Utility and repair the disk.
Don’t know if it works, coz I dun have the MacOS X installation disk on hand right now.