First of all, greets to everyone, I'm new here, hope you guys are friendly ;-)

So, the problem. I've followed this guide ->
to make LiveUSB of BackTrack but everytime I try again and again, it gaves me this error:

(initramfs) Can not mount /dev/loop0 (/cdrom/casper/filesystem.squashfs) on //filesystem.squashfs Invalid arguments.
I was digging about 1 week on the net to find the problem but unsuccessful. I've tried everything and nothing worked for me.

Here's some info what I'm using and testing on right now.

OS: Linux, Debian x64.
BT version: BackTrack 5 R3 Gnome x86, check-sum matches.

Tested on PC and Laptop. (P.S I hadn't problems with BT3 on these.)