XCode 3.2 on Mountain Lion Kernel Panic iokit.CHUDKernLib
You tried to install XCode 3.2 on Mountain Lion even though it is not supported. The system crashed during the install and will not boot normally. Kernel Panic screen mentions apple.iokit.CHUDKernLib
Hold down the Shift key at startup and the system will boot into Safe Mode
You can try running the uninstall script as mentioned in many forums.
sudo /Developer/Library/uninstall-devtools –mode=all
This did not help at all in my case.
Browse to /system/library/extensions
delete all 3 extensions that begin with CHUD
Newer versions of XCode do not install these extensions so they won’t be missed.
Reboot and the system should boot normally.