Can't rebuild the changed firmware

[Google Code Exporter]

What steps will reproduce the problem?
1./home/pc/Desktop/fmk/extract-firmware.sh /home/pc/Desktop/fmk/lc2.bin
2.Changing some files of the extracted firmware
3./home/pc/Desktop/fmk/build-firmware.sh /home/pc/fmk

What is the expected output? What do you see instead?
Expected output: Rebuild the changed firmware in this directory: 
/home/pc/fmk/new-firmware.bin like it's written in the instructions of the 
firmware-modkit
Seeing instead: Preparing tools ...
Building new squashfs file system... (this may take several minutes!)
Squahfs block size is 64 Kb
sudo: /home/pc/fmk/rootfs: command not found
Failed to create new file system! Quitting...


What version of the product are you using? On what operating system?
Product verion: Firmware Mod Kit (build) 0.99
OS: Ubuntu 10.04 LTS -Lucid Lynx-

Please provide any additional information below.
I only changed the version.txt file and a few images of the extracted firmware, 
which have exactly the same resolution as the original files. Tried with 
[-nopad] and [-min] too, but i just get an error message saying:
cat: /home/pc/[-nopad]/logs/config.log: File or directory not found

Could someone please help me with this problem? Thanks in advance!

Original issue reported on code.google.com by [e-mail] on 16 Jul 2013 at 12:43

[Google Code Exporter]

Provide a URL to the firmware image for testing.

Original comment by [e-mail] on 16 Jul 2013 at 2:01

[Google Code Exporter]

Here is the link to the original firmware: 
https://www.dropbox.com/s/3zyatvtowuit6yi/lc2.bin
And the link to the extracted and changed firmware: 
https://www.dropbox.com/s/wy6zicnovic516t/fmk.rar

Hope you can help me and find the problem.

Original comment by [e-mail] on 17 Jul 2013 at 8:11

[Google Code Exporter]

Same problem different file system
Building new cramfs file system... (this may take several minutes!)
sudo: /home/pc/fmk/rootfs: command not found
Failed to create new file system! Quitting...

Original comment by [e-mail] on 18 May 2014 at 7:37

[Google Code Exporter]

Change to the latest version.  

Original comment by [e-mail] on 1 Apr 2015 at 4:47