[NTG-context] updating ConTeXt with ctxtools

[Alan Bowen]

Gerben’s iInstaller does not seem to be picking up new versions any  
more, so I tried
     texmfstart ctxtools --update
What I got in response was
    kpsewhich: option `--expand-var' requires an argument
    CtxTools | updating
    CtxTools | unable to change to
and a return to the prompt.

I checked the man page for ctxtools, but the --updatecontext option  
does not seem to include any further options. So what am I missing?

I am running
CtxTools | version 1.3.3 - 2004/2006 - PRAGMA ADE/POD
context version: 2006.07.22 18:35

Best, Alan