Can't switch resolution

[Jude]

On my iMac 2.8 GHz quad core 17 running OS X 10.6.4, I can't switch the resolution of the game from 1024 x 768. The game crashes to the desktop if try and then click the APPLY button. This happens no matter which resolution I attempt to switch to, including the one the monitor is currently set to (1920 x 1080). If I change the default.cfg file by hand to the preferred resolution, it still goes to the 1024 x 768 upon start up.

I attempted to attach one of the crash messages, but the forum thinks the text file is too big, so I will copy it here. (Still too big--will divide the text).
--Okay, this is just damned annoying! Now the forum thinks that I am including 7 smilies in my text. I will attempt to attach a divided crash report...

Jude