Launching Cocoa Application externally

FROM : Yann Disser
DATE : Wed May 14 15:48:53 2008

When I launch my Cocoa application from Finder instead of from within 
XCode, it reports a crash. All my other Projects seem to work well 
from outside XCode...

I tried to debug my App by changing the main-function to

int main(int argc, char *argv[])
{
  [[NSString stringWithString:@"hier"] writeToFile:@"debug.txt" 
atomically:YES];
  exit(0);
    return NSApplicationMain(argc,  (const char **) argv);
}

From within XCode this writes the file "debug.txt". From Finder it 
doesn't. The same behaviour occurs with my other apps.

How can I debug my App from Finder (or Terminal) to see where it 
crashes? (printf("hallo\n") doesn't work either)
Maybe someone has an idea why my App crashes when launches from Finder/
Terminal and runs perfectly from within XCode?

Thanks,
Yann