I can use the USB stick to boot open-e V6. but when i use it to install open-e , I got the error:

egrep: /proc/bus/usb/devices: No such file or directory
#
some info :

open-e Version: 6.0up14.8101.4221 64bit
M/B : supermicro X8SIA-F
CPU: Intel(R) Xeon(R) X3450 @2.67GHz

Thanks!