Hm, are you by any chance using your administrator account as your user account? Or has your user account administration privileges?
Another test today (starting a CW battle) showed that the CW modules are also inaccessible for the application, resulting in an empty battlefield (no icons, no tanks, no soldiers were visible). No surprise, given that the modules folder has the 'wrong' ownership, too.
Like you, Herr Oberst, I installed CMBN and CW in the default location ('/Applications/CM Battle for Normandy/'), the installer reported no problem whatsoever. I had to enable the installation with the administrator password, so the installer had system privileges to copy the files into /Applications. But this is the way it's supposed to be. Nothing unusual. Every other installer does and requires the same procedure.
It just can't be right, that the ownership of the files within the CM application must match my account user. This contradicts the concept of multiple user accounts accessing and using the /Applications folder.
Phil, I reckon that developing for the Mac OS platform is fundamentally different from developing for Windows. But every other software (including games from Steam, the App Store and other sources) I'm using on my mac works without having problems with access privileges. I can't accept that this problem should be the fault of the OS. There must be a flaw in the way CMBN accesses it's application folder contents.
I'm following Battlefront since the first CM, bought CMBB and CMAK and really enjoy CMBN. And I thank everybody at Battlefront for bringing CM to the Mac OS platform! So I really hope that there is a solution for this problem!