[ Leo]LeoAnonymous 27 Jul 2012 19:32
Linking here the information I expected to find there myself :
"OmniFocus 1.10.2 runs fine on Mountain Lion, but there are a couple setup issues. The installers for Clip-o-Tron 3000 and the Mail Rule both need a little technical intervention. Also, because of iCal changes in Mac OS X 10.8, iCal Sync no longer works."
More at : http://www.omnigroup.com/support/omnifocus-mtn-lion