Was having the same problem.

This is a workaround. The appcelerator team needs to update logger.py to permanently correct.

The problem is that in xcode 4.0.2, the current iPhone / iPad simulator is actually 4.3.2, but Titanium is looking for 4.3 (as you can tell from the drop down box in the Test & Package screen).

So logger.py cannot find the log file.

The very simple way to resolve this is to create a symlink to the 4.3.2 directory called 4.3

With the symlink, the logger finds the log file and prints it to the console window.

You cannot just create an alias in Finder ... you need to do this in terminal.

in Finder browse to the iPhone Simulator directory under <your username>/Application Support/iPhone Simulator and confirm that there is no 4.3 directory but there is a 4.3.2 directory.

Open up a terminal and enter the following commands:

$ cd ~/Library/Application\ Support/iPhone\ Simulator (you can just drag the iPhone Simulator directory from finder to the terminal after you type cd)

$ ln -s 4.3.2 4.3 (This creates the symlink)

$ ls -la (This displays links)

Voila ... logging should work immediately.