[Matt Devo]

Hi.  Let me start by saying a BIG 'Thank You' to Mr Chromebox for not only making the script, but taking the time to maintain it and answer posts.  You're a good guy, seriously.  
I hate having to join the form just to make posts like this, as I don't want to be complainer.  Unfortunately, I'm having the same issue as @nelmanp

However, I'm using a Celeron Asus Chormebox 3.  FWIW, I had a CN60 myself, and sometime around May or June the install on USB stopped working for me as well (different error, however), so I upgraded to the "3".  But no joy.  

I am attempting to install on a USB stick.  I've tried at least 2 USB sticks over the course of 3 or 4 months, but the error (not look like a valid tar archive) persists each time.  
I assume we're not the only 2 getting this error.  
Has anyone found a workaround?

I'm not quite clear exactly what the issue / error is. Which script option are you using?