thanks \"the eagle\" but I copied and pasted what you suggested, and it said \"no such file or directory\" it\'s trying to see chmod as a folder i think. I also tried tinkering around with that sentence, but still no joy. Thanks for trying though.
cd users/joseph/desktop/planeshift3d/chmod 755 psclient.app/Contents/MacOS/psclient
it\'s that bit there, after \"planeshift3d/\" the chmod 755 bit. isn\'t that in the wrong place? because that would have to mean that chmod was a folder wouldn\'t it? anyway, you probably know loads more than me. Thanks for your help, I\'m just a bit desperate to get it working.