For some reason, I can no longer select mouse button 4 on my Kensington Orbit as the activation key for any of the three Expose modes. I had an older orbit on this same hardware/os installation, running MouseWorks 2.5.1, and I could see MB4 without issue. Then I briefly installed Logitech drivers (which are now removed), and then reinstalled MouseWorks. Now the only option that shows-up is Right Click. I've looked around for advice here, and elsewhere, but cannot find any information on why this is happening, or where expose preferences are located (within some non-obvious file). Any help is appreciated.
/Cincinnatus