"ERROR: Missing previously packed blob" when script executes "vbutil_kernel" command

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Download and run the script on a non-64 bit machine (in my case, an Acer 
AC700)

What is the expected output? What do you see instead?

The script should normally execute fine. But instead, before I fixed the 
problem (in patched script attached to this bug), the script would get to the 
kernel repacking (using the keyblock signatures on the device) and error out 
with the title.

What version of the product are you using? On what operating system?

12.04... on Chrome OS Dev Channel (Acer AC700-1099)

Please provide any additional information below.

Fix attached to bug...

Original issue reported on code.google.com by Kenny.Strawn on 19 Feb 2013 at 5:01

Attachments:

• install-ubuntu-1204-10.sh

[GoogleCodeExporter]

I tried this on my cr-48 and got this error from vbutil_kernel:

ERROR: Config file kernel-config is too large (>= 4096 bytes)

When I removed the config argument (and left oldblob option in) the error went 
away. Looks like config option isn't needed if you give it the version option.

https://chromium.googlesource.com/chromiumos/platform/vboot_reference/+/0b321bb6
abf8f8c2a2ae524ed77995d2b2cfc3ea/utility/vbutil_kernel.c (line 965()

Original comment by pauledangerously1@gmail.com on 2 Oct 2013 at 1:31