> Weird. Can you activate the extended debugging mode (Set 
> Options / Experts only / Debug mode checked) and look at 
> the hts-ioinfo.txt file generated to find the first 
block 
> occurence of 401 error to find out what's going on ? 
(don't 
> copy/paste the extract here, as the trace will contains 
> your password in the Authorization: field!)
> 

Well, I just attempted to continue the interrupted 
download (I mispoke before, I was continuing it previously 
as well), and I had the same problem.  EVERY html request 
was met with a 401 Authorization Required in the 
htsioinfo.txt.  My username and password occur NOWHERE in 
the file.  It seems like, from your comment earlier Xavier 
that they SHOULD so that seems like the smoking gun 
pointing to the problem.  I'm still not sure WHY that's 
the case though.  I can send you the configuration file 
and log file if you would like, but I am hesitant to post 
them in case there IS information in there that shouldn't 
be public.  Thanks again for your assistance!  -Mike