Default [Q] NABIJR fastboot fail

I'm using the method here http://forum.xda-developers.com/show...php?p=44260483 by user aicjofs and whether I click twrp root stock or whatever the display on the nabi shows this
"Entering Fastboot based on booting mode configuration
Starting Fastboot USB download protocol"

Under tools when I use ABD - Android/TWRP radio button and click devices the device shows up fine when I select the Fastboot - Bootloader radio button and click devices the window that should show the device pops up blank.

Any help would be great, Thanks!