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johncozen

macrumors member
Original poster
Feb 5, 2010
40
6
I purchased the new iMac launched this week and it has a custom OSX build 10.6 that will not update to 10.6.7 and I am unable to launch my Steam copy of Portal 2 because Steam prevents the game from launching and an alert box appears saying Portal 2 requires 10.6.7. Anyone got a fix? (tried the combo update, won't install)
 
Isn't there a way to change one of the plist files, which will make the info box say it's 10.**
 
May be because 10.6.7 has different drivers for the 3D acceleration? Still, don't understand why it won't update...there's your problem right there!
:eek:
 
Got it working on the new iMac

I managed to get it working on my new 27" iMac by editing a system file to fool Steam into believing that you are running 10.6.7 - I believe the 10.6.7 requirement is because of new ATI graphics drivers that were bundled with that release and therefore this is quite safe (as the 10.6.6 build on the new iMacs obviously has the drivers for the machine).

I've posted the full details at http://bendodson.com/weblog/2011/05/04/portal-2-on-the-new-imac-10-6-6/ but basically you need to change the SystemVersion.plist file in your /System/Library/CoreServices/ directory so that the two references to 10.6.6 are changed to 10.6.7 - Steam will still complain but when you say "continue anyway" it'll actually run.

Enjoy!
 
Nice, hope this works on my machine too, and doesn't eff up anything else.
 
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