cian-sweeneys-computer:/System/Library/Extensions root# kextload CardBusWirelessDriver.kext/ 
21CardBusWirelessDriver is not compatible with its superclass, 20IOEthernetController superclass changed?
kextload: a link/load error occured for kernel extension CardBusWirelessDriver.kext/
load failed for extension CardBusWirelessDriver.kext/
 (run kextload with -t for diagnostic output)