Using terminal, you can unload the kext my using the following. Now you can remove them one by one or remove the one that you think may be the suspect.
This command should show you all the third party extensions. sudo kextunload -bundle sudo kextload -bundle (kernel) Kext not found for unload request. Failed to unload - (libkern/kext) not found.
Otherwise, paste the log in this thread for help. If there are no errors, and you eventually see the link going up with a proper speed, then the driver will work with your hardware. sudo chown -R root:wheel forcedeth.kext 8.
