I’ve noticed when using the netinstaller that if you don’t specify a configuration script when installing directly to flash (usb card reader etc) the installation fails when installing upon the actual device (a wrap in my case).
So is the configure script simply the exported configuration from a MT Router or do I have to roll my own?
I did 5 WRAPs last week with netinstall to an USB reader - no config - no problems. Did need to format the card first.
I tried all kinds of formats etc - all the same result until I specified some random text file in the configuration field.
I guess I am the exception 
Hello,
yes the script is the same commands that are from the cli.
But there is a problem with the size of the script when it´s included in the netinstall.
Try to just add a few lines and you will see it´s working.
This is a known bug, look in topic:
http://forum.mikrotik.com//viewtopic.php?t=9032
Regards, Paul