Installing Mavericks kext - invalide signature , please help :(

[Guest millusions]

hi guys,

 

i've got a bootable Mavericks USB, all works fine.

the installation goes through to 100% but fails at the end. i dropped to terminal and had a look at /var/log/install.log (bit hard to save it as all filesystems are read only) so i took some photos.

 

basically, the log looks fine as far as the install, but at the end it does:

 

System.kext is not authentic; omitting

and others

WARNING - Invalid signature xxxx for kext /Volumes/hacked/System/Library/Extensions/IOUSBFamily.kext

 

so, one, it doesnt install some important kext,

and two fails signature for installed ones.

 

how to get around this? any ideas? 

 

pic: