I have big problems with FireMonkey applications not running on my new Mac Mini. Does anybody have any information about any possible incompatibilities between XE 2 Update 4 and OS X 10.7.3?
Full problem description is on StackOverflow.
This problem is connected to the Thread Status window. If you have this window visible in the Debug desktop, Delphi will lock when you try to run an OS X application in the debugger. Removing Thread Status window from the Debug desktop solves the problem.
Interestingly, some installations of XE2 Update 4 are working just fine even when Thread Status window is visible.