I am unable to left click with the track pad on anything OS X related. I booted into recovery mode and was unable to reinstall because I could not click the damn button! I booted into BootCamp and was able to click in Windsow (I'm in Windows right now) so its not a hardware issue. I have also tried various 3rd party mouses (<---) with no luck. Does anyone have any advice that will let me downgrade from OS X 10.9 Beta back to 10.8? I have use of the keyboard in recovery mode, but cannot select reinstall once its highlighted (not even with the return key) I don't have a backup disk and I need to be able to use this computer. Any help would be appreciated.